Mary is spot on. If you could draw a line from the leeward bow diagonally across the boat to the aft edge of the windward runner, and you could put your weight on the extension of that imaginary line, you could really make a boat fly.
If you could do this with a Wave, I think you might see 20+ speeds. There have been times on the Wave, like some Laser sailors, that I felt I was close to 20, but there is no way I could produce evidence of that.
Funny, but when we used to beercan race the Sunfish, you could swear you were hitting speeds in the mid teens, but you also knew that was IMPOSSIBLE. It just seemed that way.
Back to the lee bow and the Wave, with the new rudder system which is much higher off the deck, your put your leg under the hiking strap and hike almost straight back off the stern of the boat. In that hiking position, you can really keep driving the boat hard and attain much higher speeds.
Rick