Recently did some steel fabrication at the wyloyard workshop. Upgraded my Fattyknees8 trailer by adding winch and an aft keel roller, so the strenous dinghy retreival heave-ho onto the fairly high converted 6x4' box trailer is no more. Just a satisfying and easy click-click click of the winch to get the dinghy onto the trailer now. Should look after the old shoulders and back too.
More detail is in Waterways - Fatty knees trailer upgrade/maintenance