There is a system in which the adjustment is pretty much all in the rudder stock which requires the minimal amount of work on the boat itself. It is currently fitted to two boats that l know about, dare bary's ginger pudding and John Thornton's chapter. The only additions needed to the hull are a bit of transom strengthening (triangulation at the pintles if not already there and a few blocks and cleats in the boat. The great thing about this method is you can easily switch foils from boat to boat without the need of the complexities of the ram seen on the pink foolish 'Alpha Male' I'll try and get photos of it when l next see John.