Another vote from me for light MTB gloves...
I got a tip from a fellow fisho in Indo, suggesting Fox Incline gloves... I picked mine up for pretty cheap comparitvely, around $40 I guess, and they have been awesome....
I would love a pair of the "real" fishing gloves, but for me fit is crucial, and there is nowhere locally that stocks any fishing brand gloves except the Cultiva/Owner ones, which I feel are crazy over priced, and they don't last at all from what I've seen, so I am not willing to risk shelling out big dollar for gloves that might not fit perfectly...
But the Fox Inclines are available at any biking store, pretty cheap, and tough... a good bet in my opinion...