Having had Dock Itch in the worst way many years Rob I know the cure is a sled so you can access that Paradise year round. There is a flatter spot on the West side of your place where you can pull stuff up but I found that I was safe most springs by pulling the wharf parallel to the shore and tying it up there. The real cure is being there of course and fending off the little floes as they head you way.
Cheers
Kiwi