One thing I use a lot when hole hopping is a Hand muff that I wear around my waist. I keep one of the chemical hand warmers in there and it works great to quickly warm up the hands after they get cold. The only down side is that thing starts to get rather smelly after a few days of putting you hands in there time after time right after handling a fish. I tend to get that out of the truck as soon as possible after getting home and hang it in the garage. The wife was not happy the one time it ended up on the bottom of the laundry basket after several days of use.
X2 on the muff and handwarmers!
Only thing I’ll add is a golf towel clipped to your bibs is critical to keeping hands dry. And by “golf towel” I mean an old cotton t-shirt with a carabiner attached.