I use a 12 volt winch with 1/4 inch plastic coated cable. Based off of a design from hand powered kayak lift kits. I attach two 24" pieces of pre-holed angle iron with 3/8" 3" lag bolts (the 24" lengths help adjust for your kayak length). Then I attached pulleys to the angle iron. Then you need two pulleys that attach to your kayak bow and stern handles with load bearing carabiners. Winch on one end yak pulley on the other. It works off of my 12v battery that I use for my FF. I unload it, rinse it, bring it into garage, hook it to pully's, lift it, disconnect battery and charge for next trip... reverse the process to lower them. I have a couple winches left over if anyone is interested, you can also get them for fairly cheap from Harbor freight. I also use small safety cables attached to rafters just in case of a failure anywhere. It works great!
