I own a 7.5 Prisma and it works great on my RRD Z-Ride 133. Lots of power to get planing
in lighter winds, and if it picks up, just add more downhaul. very stable sail with the two cams. btw, the NS cams rotate just as easily as a non-cambered sail
easy to rig with all the guides printed on the sail, even harness line location.
I have also used it on my Exocet Pacer raceboard in 14 plus knots, works great.
very good sail.