General Discussion Triathlon Talk » Swimming straight doesn't matter very much Rss Feed  
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2009-06-29 3:02 PM
in reply to: #2250209

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Master
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Sunny Southern Cal
Subject: RE: Swimming straight doesn't matter very much

Just jump on the feet of someone going your pace who is already doing the sighting.  Then you can just swim and not worry about the sighting except for an occasional glance to make sure you are both still on the swim course.  No sighting, no worries.



2009-06-29 3:05 PM
in reply to: #2251078

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Subject: RE: Swimming straight doesn't matter very much
SevenZulu - 2009-06-29 1:02 PM

Just jump on the feet of someone going your pace who is already doing the sighting.  Then you can just swim and not worry about the sighting except for an occasional glance to make sure you are both still on the swim course.  No sighting, no worries.



As long as they aren't the OP

Actually, my HIM swim PR was when we were swimming into the sun and my goggles would not stop fogging.  I could see a line of guys through a little fog free slit, and I just followed along on the train.  Hit every buoy straight on
2009-06-29 3:09 PM
in reply to: #2250209

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Master
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Lake Norman, NC
Subject: RE: Swimming straight doesn't matter very much

I totally disagree.  Swim with a gps in an Aquapac and measure distance as well as time.  One problem with your numbers is you don't take into account acceleration and deceleration.  You assume a constant 1:45/100 pace and that wouldn't be the case.  The constant course-alterations will have a much more serious impact on speed.  Hydrodynamic drag is to the CUBE.  When you slow down to correct, you slow down a lot.  When you get back on course, it takes a lot to get back up to speed.  So you're not just swimming the extra distance at a constant speed.

When I practice my sailing racing, I always check my gps log and see such a dramatic difference when not sailing straight.  When I open-water swim I can tell when I'm not going straight and the time totally backs it up.

IMHO, I would say that over 1,500 meters (almost a mile), and constantly correcting for an 11.3-degree error (off 15m for every 75m swam) would add AT LEAST 5 minutes to the swim time.  - IMHO

2009-06-29 3:13 PM
in reply to: #2250209

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Elite
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Boise
Subject: RE: Swimming straight doesn't matter very much
For all those people who say to just sight off other people, that's a horrible idea. You may get someone like me who is a much better pool swimmer than an OW swimmer who veers off course but is leading the swim. yes this did happen last year in a race where I lead most of the front of the pack off course because the sun was right above the next buoy and I swam to the wrong spot.
2009-06-29 3:19 PM
in reply to: #2250934

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Pro
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Subject: RE: Swimming straight doesn't matter very much
Daremo - 2009-06-29 3:30 PM Nah, swimming straight doesn't matter at all and neither does sighting.

I HIGHLY recommend that approach to everyone in the M35-39 field!


(Especially in you are in the same race as me .... I need all the advantages in the water that I can get!)



I think you're trying to trick us somehow.
2009-06-29 3:31 PM
in reply to: #2251138

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Cycling Guru
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Subject: RE: Swimming straight doesn't matter very much
Shhhh!

It is also really prudent to not use any sort of aero equipment as it is a waste, that everyone should bring buckets into transition to sit on and always wear socks (bucket allows you to sit down while you put your socks on), and it is really important to slather on a ton of sun tan lotion in an oly. or sprint race!

I swear, this is what I see all the fast M35-39 AGers do, so everyone should do it!!


2009-06-29 3:40 PM
in reply to: #2251184

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Elite
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Subject: RE: Swimming straight doesn't matter very much

Daremo - 2009-06-29 3:31 PM Shhhh!

It is also really prudent to not use any sort of aero equipment as it is a waste, that everyone should bring buckets into transition to sit on and always wear socks (bucket allows you to sit down while you put your socks on), and it is really important to slather on a ton of sun tan lotion in an oly. or sprint race!

I swear, this is what I see all the fast M35-39 AGers do, so everyone should do it!!

You're talking about compression socks, right?!?

2009-06-29 3:53 PM
in reply to: #2250209

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Bob
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Binghamton, NY
Subject: RE: Swimming straight doesn't matter very much

If you're sighting correctly there is almost no extra energy used to sight. Why would you want to swim 25 yds (or 75 yds) without sighting? I sight every 2-3 stroke cycles most of the time, it's just the rhythm that I have gotten used to. I can go 20-30 strokes without sighting and under perfect conditions would still swim in a straight line but throw in a little wind or current and after 20 strokes I might not recognize what I am looking up at.

I think most of the sub 1:15/100 swimmers would agree with this.

2009-06-29 3:55 PM
in reply to: #2251258

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Expert
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The Woodlands, TX
Subject: RE: Swimming straight doesn't matter very much
rstocks3 - 2009-06-29 3:53 PM

If you're sighting correctly there is almost no extra energy used to sight. Why would you want to swim 25 yds (or 75 yds) without sighting? I sight every 2-3 stroke cycles most of the time, it's just the rhythm that I have gotten used to. I can go 20-30 strokes without sighting and under perfect conditions would still swim in a straight line but throw in a little wind or current and after 20 strokes I might not recognize what I am looking up at.

I think most of the sub 1:15/100 swimmers would agree with this.



Yep. I would agree.
2009-06-29 4:00 PM
in reply to: #2251258

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2009-06-29 6:51 PM
in reply to: #2250209

Master
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Subject: RE: Swimming straight doesn't matter very much
If TJ Fry and his huge swimming background needs sighting every 4-6 strokes, you'd better believe that 99% of us will need sighting at LEAST that much or more.  

I do think that the original post with the 75m of sighting VASTLY underestimates sight distance. Every 10m sounds about right for a below average swimmer like me, if I'm in ocean with waves and current. 


2009-06-29 7:06 PM
in reply to: #2250209

Veteran
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Arlington, VA
Subject: RE: Swimming straight doesn't matter very much
I was not recommending sighting every 75m.  My only point in the original post was that even substantial deviations don't really add up to much extra distance based on simple geometry.  I don't think most people come anywhere close to deviating at a 45 degree angle.  Sight as often as necessary and swim as straight as you can, but if you end up off course, point back toward the next turn and keep going because you haven't swum that much extra distance.
2009-06-29 7:14 PM
in reply to: #2251693

Champion
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Subject: RE: Swimming straight doesn't matter very much
kcb203 - 2009-06-29 7:06 PMI was not recommending sighting every 75m.  My only point in the original post was that even substantial deviations don't really add up to much extra distance based on simple geometry.  I don't think most people come anywhere close to deviating at a 45 degree angle.  Sight as often as necessary and swim as straight as you can, but if you end up off course, point back toward the next turn and keep going because you haven't swum that much extra distance.
Races are based on time and not how much distance you cover. You've now heard from all kinds of people with experience doing this. You're way overestimating the ability of most people to keep even a relatively straight line and underestimating the time and energy it takes to continually correct.
2009-06-29 8:25 PM
in reply to: #2250209

Extreme Veteran
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Canton, MI. via Detroit
Subject: RE: Swimming straight doesn't matter very much
For what it's worth, I'm one of the lucky ones who can swim straight with little or no effort.
2009-06-29 8:45 PM
in reply to: #2250209

Expert
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Southern Pines, NC
Subject: RE: Swimming straight doesn't matter very much
I think this graph explains it all:

2009-06-29 9:53 PM
in reply to: #2251949

Champion
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Subject: RE: Swimming straight doesn't matter very much
hahahahahahaha.


also, to the OP, i know for a fact, and have photos to prove it, that many poeple do in fact go MORE THAN 45 degrees off course, and often much further, and not just once, but through the entire swim.



or, for a bit more math, say its an oval course, and you swim 10m, or 30 m wide of the bouys, many poeple routinely stay further than this, 750m loop. how far extra would you swim staying those distances wide?
how about for two loops?

i am not even going to think about math right now, but just on a 400m track those lines are pretty far apart, and thats for the width of ONE LANE around the curve.


2009-06-29 10:26 PM
in reply to: #2250209

Extreme Veteran
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Alexandria, VA
Subject: RE: Swimming straight doesn't matter very much
just had to add that the people that were back stroking towards the shore (90 degrees off course) at my last race would have probably gained a bit more than 31 seconds from sighting a bit more often.
2009-06-29 10:34 PM
in reply to: #2250209

Subject: RE: Swimming straight doesn't matter very much
I know it's beginnertriathlete and all, so I'll give you a bit of a pass on this one...  but you're basing this advice on one open water swim in your career? 
2009-06-30 12:21 AM
in reply to: #2250209

Extreme Veteran
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Herriman, Utah
Subject: RE: Swimming straight doesn't matter very much
I am SO Hurrr! My problem when sighting is that it seems my whole head pops out of the water and I can't just peek over the surface. Oh well, I like being the dude who swims like he drives a bumper car.

Edited by mrwrite 2009-06-30 12:23 AM
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