I just bought a pair of gloves at EMS ems.com for this purpose. I've used fingerless and wool but I always find my hands getting cold if it is below freezing. Above freezing I don't have that much of a problem.

What I bought is Dakine Viper gloves. They are waterproof andpretty thin. It seemed like a nice compromise between being thin enough to handle the line and thick enough to give some warmth. Cost $35.00 It has several features including and I quote
"Nose wipe thumb panels". Now what could be better.