If you are going on the water in a complete dry suit, and by this i mean one that is body length and sealed at the neck, wrists and ankles. release the air. Before you enter the kayak, bend your waist and your knees and squeeze into a hunched position while opening the seals to let the air out. Why? Because if you capsize the water will push on the suit and the air will rise to the highest point - your legs. So if you swim your legs will be very buoyant and this could prove to be problematic!