General rigging

Purchased a 1986 DS III in Sept on Cape Cod MA. Sail number 12977 and the hull plate seems to show an ODAY manufacture. Can anyone simply explain the DS , DS II, and DS III confusion to me ??
Does anyone have advice on operating the centerboard.Works very hard. My first Day Sailer in '68 used the handle.
Any thoughts on a boom crutch? My first one used one but on the new one, the boom does not reach the transom. Use a topping lift??
Any thoughts on local parts/dealers and fleets/regattas near Cape Cod??
Just getting in to it and quite excited about getting involved in DS activities.
Thanks for any input.
Dave Roscoe East BRidgewater MA
Dave Roscoe (w1dwz-at-rcn.com)
Does anyone have advice on operating the centerboard.Works very hard. My first Day Sailer in '68 used the handle.
Any thoughts on a boom crutch? My first one used one but on the new one, the boom does not reach the transom. Use a topping lift??
Any thoughts on local parts/dealers and fleets/regattas near Cape Cod??
Just getting in to it and quite excited about getting involved in DS activities.
Thanks for any input.
Dave Roscoe East BRidgewater MA
Dave Roscoe (w1dwz-at-rcn.com)