I have always had hands that can sometimes react strangely to the cold especially when damp (Raynaud's). What I arrived at as the best solution for cold fishing or ice fishing for me is to have a quarterback hand warmer muff around my waist that has has two single use chemical heat packs inside and two spares in an outside zipper pocket. That way I can fish barehanded and bring my hands back from the dead occasionally or use a pair of fingerless wool gloves that either have the velcroed flap to convert to a mitten or not and also pull them off frequently as needed. I sometimes bring a good pair of icefishing mittens that I use for driving the boat, walking in with an icefishing sled or waiting for bites if tip-up or live bait fishing.