I have just collected the first Sprint 15 sail with buoyancy added to the top section.
The buoyancy is easily removable by untying a few lengths of string.
The buoyancy is class legal at Shanklin Sailing Club. All novice, lightweight or less physically able sailors should get this fitted to their sails.
You can get your sail converted at Paul Newell Sails in Bembridge. Call Paul on 872834.