I need any plans, ideas, references, or websites to a manual boat lift capable of lifting 3500 lbs. I can think of ways to use winches and come-alongs, but I thought someone else might have a better idea or know where I could buy a manual lift to lift a 20' Wellcraft out of 20 " of water. My dock is so far form the power source (nearly 1200') that wiring cost is prohibitive for a power boatlift. Thanks for any help or ideas.