Reply To: foresail

I am interested in the idea of a 100% with tracks on the main cabin roof as on David's boat but am concerned about finding something strong enough to fix them too. Any thoughts on this?
Our idea is to have a second roller reefing foresail just in front of the genoa.
It would mean rolling the genoa in in order to tack it, but if you're off the wind you shouldn't be tacking too often.
Has anybody tried this?
Thanks
Robin