[crazyfrenchmen]

hi,
being french canadian and a ice diver myself, i know cold. The best thing for keeping your finger warm, i found at the Escoumins (a paradise for diver). The trick is to use dry mitts. They are three finger gloves for dry suit made of 7mm neoprene. The think about them is that they have a neckdown at the wrist so it's water proof. What you want to do is to fill 'em up with mildly hot water. After that you put your wet-suit wrist OVER the glove's wrist. That way, water wont comes in or out of them.

You have to fill them with water or else the pressure will compress them on your fingers and you'll feel the cold much faster. It's really pure bliss to have cold water all around you, your lips are frozen and your finger are gently floating in hot water...

By the way, i also use a pair of 100% wool sock in my booties when i dive in cold water, the best are the one that my grandmother make but they are only for me... sorry.