Stay dry. The biggest danger would be if your drysuit was compromised (ripped torn punctured) and started to fill with water which would be bad for the thhermal properties you are seeking. Not good for getting a cold now helpless hypothermic victim back onboard either (had to slice the booties to get the water out). Be extra careful in the cold. My solution was to move from Michigan to Florida and wear a wetsuit with a spraytop. Ice divers often are in dry suits but this is very specialized. Nothing like being dry though.