I used this on the I-12 so I cannot comment for the other inflatable models.This sail works pretty well if you are sailing downwind or beam reach. You definitely need to pedal while you sail if you are sailing in order to stay on course if you are sailing across the wind. You also definitely want to get the big rudder for the I-12. All in all, it could definitely work better. But it works well for winds over 10 knots. You can at least use it to get back home.