Ironman swim start- in water (IMCoz)

The start used to be in the water and you could tread water or wait on the dock and jump in at the last minute, or hold onto the dolphin cage until the cannon. I saw people doing all three. As noted, it is a salt water swim so treading was no big deal (I am not a strong swimmer). That said, the course is different this year after the last minute changes in 2013. As noted on the website it is now point to point with "only one mass start for all the age group (waist deep)". That should allay any fears about tiring out while treading water.
Relax about this swim. Barring crappy weather the swim is incredible - clear/clean so you almost never need to lift your head to sight.

Thanks! I did read that, too, but then thought they had changed it! Awesome. Appreciate the feedback!