I've been using the Landenberger aluminum ring and dacron taperd sock for several years and it's been great. Cost about $230 USD. This is nearly identical to the current Capricorn F18 setup, so there should be dealers in US to get this ring. Recommend getting dacron for the bag...mylar looks flashy, but once the sail is wet it will tend to stick/suck down onto mylar making hoists/snuffs harder (=slower).