Cold hands in the swim.

Hi, having some trouble with swimming in water temps of 60's, my hands tend to become claw like making for a poor catch (and my catch is not great even at its best). I am able to keep going for a bit by clenching/releasing my hands a couple of times during the recovery, but its anoying at best and worrying that as the swim gets longer the clench/release approach will not work. Any ideas on what I could do? Am training to acclimate to cold water, but doesn't seem to be doing much good other than making me dread it each time. Outside of the water also my hands get cold very easily(i.e gloves for the run when its sixty), opposite of the rest of me where I will run in shorts all the way into the forties.

Will be wearing full wetsuit, neoprene cap, also neoprene socks if below 65. Will also be drinking some warm ginger/cinnamon tea prior to start. Also pour some warm water into the wetsuit. On practice swim doesn't seem to help a whole lot. I am a slow swimmer so will be in the water for a while. I know gloves are not allowed under any circumstances.