why spend a lot of
money for a sx that is complex, prone to problems and likely to give you a poor sail shape. Unless rolling up the sail to turn on the
motor is your main act. for good sail shape full batten large Roach main with lazy jacks or lazy jack type zip up cover=
reliability and sailing efficiency. You probably won't find too many ex racers using roll up mains(unless there really over the hill). A good large roach full batten multi
hull main sail may not
work too well in a roller boom (too many battens and too much material to stuff in)