Man, with the costs of the line pullers, I needed to figure something out. I already have a davit, but pulling with my shoulder is impossible at least for the rest of the year or longer. I went hunting for a motor I could install on my davit and found one that should work.
(https://i.imgur.com/3MC0N8J.jpeg)
I think it's from an electric wheel chair or a rascal, but not certain. In any case, it was on eBay for $59 and I put it in my cart just in case. I then get a message that it's $39 with free shipping if I accept, so I pulled the trigger.
I hooked it up and it works, so now have to figure out how to mount it to the davit and install an on/off switch. In any case, it will be a shoulder saver!
(https://i.imgur.com/HO2h8Yg.jpeg)