I see multi purchase mainsheet controls on lots of catalina 30s and a few other boats.
Who would have some line drawings of various types?
Take this line.. now run from...fiddle block, a.. to fid b.. to block c... to block d.. to block e...
to block g.. oops f!... to g..
down boom to turning block... to deck organizer.... through eyelet... to rope clutch... :