Ok I guess I've been lurking out here long enough and here is something I have some experiance with... I've got a 110 "project" (at least that's what it has turned out to be) that has a Ramsey hydraulic winch and the pump is engine driven via double V belts through an electric clutch. The clutch looks like a clutch on the York air conditioning compressors and seems to work fairly well. At least the set-up has pulled the truck out of some tough spots on occasion without any problem. I've got a photo if it'll help.