Looking for good winch

Looking for a good winch that will pull an 8' x 10' dock out of the river. Dock weighs 1500 but put 9' cedar posts under it for rollers. Have block and tackle that reduces apparent pull load to 25% but would prefer a winch that would pull the dock out without the block and tackle. We pull the dock onto our lawn and can not get a truck close enough to just tow it out. Can get close enough to use truck as dead weight. Does not have to be a front of truck mounted version. AC operated OK too.