Since you've done all the math, about how much of an angle would you have to put your daggerboard at to lift the entire weight of an A cat (165lbs) plus say, a skipper of same wt. for a total of 330lbs. clear of the water, at say, 10 knots boatspeed? For computing purposes, figure the two daggers will lift equally, and we will also have T foil rudders which also will (theoretically) lift the same amount as the daggers, or 25% lift on each of the 4 "foils". (so each foil has to lift about 82.5 lbs. at 10 knots boatspeed)

Dave Carlson, did you do similar math when you built the Jackalope foils? <img src="http://www.catsailor.com/forums/images/graemlins/confused.gif" alt="" />