Re: Winch Line
use rope on hand and buy a tank of gas with the savings.
However I have observed that if you use clothesline, a 17' whaler will get half way up on the rollers before the line will pop and the boat will re-launch. (This was as I predicted, out loud, to my friend who insisted it would be OK.) And if the incompetent help already tossed the lines in when the boat was half-way up....
I also know: You can pole vault from a dock to a drifting boat on a shove pole.
Point is, small boat, no worries. float on, not much worries. For us salties who launch and retrieve dry, we have to be careful.