Thinkin of belt/pulley drive to start with since my pump turns the wrong way for direct connect. Lift speed dont need to be fast --- just get the bed up and back down! ---- got caught too many times with bed halfway down and battery dies----so trip home with bed part way up--- not something I want to do anymore.
I was thinking since the belt drive worked on the splitter with a 4" x 24" cylinder and moved fast, it should work on the trailers twin cyl. setup. I think they are 3 or 3.5 inch dia. on it.

"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands."