Don't know where is the best place to post this so will do it here. If you are usually working by yourself like me, you might want to consider this. I got tired of trying to guide an engine into or out of a tractor and raise or lower it with the hyd cylinder of my engine hoist. Also letting it down just a 1/4" or so is almost impossible. So I added a HF worm gear winch at the end of the boom. Now I can guide with one hand and reach up there and raise or lower it 1/16" if I need to. The worm gear stays where it is when you quit turning it. Made a huge difference in the ease of use. Hopefully you can check out some pictures here.
https://www.dropbox.com/sh/3enn3ih74...ef2vurAFa?dl=0