hi . do you gays need more speed? then let me help you with +4knots more.it all in the sail drive.i build a tripple wing drive two years ago and tested it on a model trimaran. It was zooming over the water. you need more aerodynamica in top part and main body...i am doing this for 7 years now and love it. I am busy at this moment with my second sail project and the body is half way finished and i do all my modeling in a wind tunnel..(aviation aerospace included) contact me and we can do the 54knot barrier up and down the runs....greetings sias in gauteng south africa( not far from you)