Originally Posted by captnjack
Are you actually a diver?.
Yup, since 1976, couple of thousand dives in that time, stopped counting years ago. Been diving trimix rebreathers since 2003, have done dozens of +100m dives
A Neoprene dry suit will indeed float you horizontally as it is inherently bouyant, a membrane surface suit similar to the OP's has no intrinsic bouyancy & relies on the trapped air inside, this will migrate to the highest point. If you upend in a membrane suit (ie do a surface dive) you WILL hang head down. We used to teach this in the pool & how to recover from it, i.e. as previously mentioned, curl into a ball, roll & force the air into the chest area.
Re the adipose fat, maybe we don't carry as much on this side of the pond as our cousins