Posts 18-20 make many points that were missed. Like most multihull
sailors, he will be cleaning
while standing on the bottom.
In this situation (I've had 3 multihulls), the only down side of a dry suit is cutting it on barnacles
. You'll just have to be careful. You should be cleaning
before there are more than a few. If the water is truely near 35 F and you are worried about the shock of cold, this is the way to go.
No, not cheap
. Used dry suits are likely to leak.
As for latex allergies to the seals
, you can probably fit something under them. Nitrile gloves. Maybe a very thin balaclava over the neck. It will leak, but your head
won't be going under much and the balaclava will keep critters out of your ears. I would ask a drysuit maker. Get a suit with attached feet (no ankle seals).