Recovery is difficult. We had a MOB in 2015, quite a small lady but heavy as lead for recovery, and there were three of us to get her out, with ladder available and all briefed.
Had I been the only one doing the recovery, it wouldn't have been funny at all.
Since then our MOB kit includes a floaty line with clip for lj harness and running through a block with clip for wherever is handiest in the event, usually that would be the boom. I have given myself a better purchase but also the line can go back to the casualty who can then help recover themselves pulling on it with me assuming they are able.
Cold shock? Absolutely right. Debbie was teeth chattering and insisting she was fine. We were trying to get the silver blanket round her and she wasn't really able to cooperate in the few moments after getting her aboard. I had to really insist on getting her into the cabin, out of wet gear and under a duvet, it took quite some time for her to warm up.