A 5mm is plenty especially with a hooded vest. Bring a couple gallon jugs of warm water (or a container you can fill in the bathroom sink) to dump in your suit right before you step in if you think you're going to freeze, that will keep most of the cold water from getting into your suit. We'll have heated tents on the surface so you won't freeze during the SIT, my buddy's salamander heater will have you sweating and pleading for cold water in no time at all if you get close enough to it
Ber :lilbunny:
Ber :lilbunny: