I race with a Hunter 40, right now I have a 140% genoa and have been racing and cruising it for 15 years. Time to replace sail, but I can't decide on what size sail to go with. Our river system can go from 0 -25 true in a heart beat, but mostly around 5-15..... When heading upwind I am looking for a sail that can get me at about 20 Deg App, our 140% can run at about 30-40 quite well... Any suggestions....