Marine deputies cannot back a boat trailer

I’ve live on a lake and have backed many a boat. That was me the first time. Once I backed the boat far enough in that the wheels went off the underwater concrete slab. It was cold as hell. I’m had to strip down and and untie the boat then pick the trailer up off the slab while my buddy pulled with
His truck. I missed a few days work because of hypothermia. The worst part:
The Dr told me that once you get a cold injury you are way more susceptible to another one. And if that happened again I was done being out in the cold for very long. Three strikes your out !!!