Actually, the reverse-winch lets your boat out to a set point, convenient for the driver to get on board, start her up, then give a little wiggle and the boat launches itself out. To get it up? you drive right on - about 85% of the way - and a few quick winches to bed it for the night. or leave it as is, have a burger with the kids then take your craft out for another spin with the family or with the boys. See www.jetdock.ca
for some pics of ones we installed in Canada.
Some were installed at 12 - 18 C but most went in the full 30C sunshine of the Northern Ontario summer
. All are going to winter in the water, sitting safely up on top of the ice. We always advise water shoes be worn for those hot-hot days, on the craft and on the dock.