You only need talk to the foiling Moth builders about how they are controling their T foil rudders,
I already know and their setup is not sub-optimal. Their rudders are designed to be easily controlled by the skipper all the time, because they use there rudder foils to trim the main foil. Also their rudders don't kick-up. So I do not have a comparable setup nor similar requirements. For these reasons the design converges.
Also the Moth rudder foils and even the mainsail are not very efficient. They only adjust the trailing egde of their foils and not the whole foil. This is a suboptimal setup, but works for them because adjusting the whole foil is far to aggressive on the twitchy moths and leads to major control problems.
In case you hadn't noticed. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> The Moth sailors are carrying their boats, mast layed horizontal, into the water then have to swim it out to sufficiently deep water before righting their boat and sailing away. I'm NOT going to do that with my F16 in the North Sea breakers.
Or, use a cassette type rudder head as the Stealth does, and add some sort of tilt adjustment to that with three settings, nose down, neutral and nose up.
Don't want the Stealth setup for the reasons specified in my earlier posting. Basically, non kick-up rudders, non adjustable to sailing conditions and not possible to adjust trim when on the water.
For the second part of your statement, "some sort of" is the key component, without specifying what that exactly means we are left with basically nothing.
It is exactly the "some sort of" that is detailed in my proposal.
Also a "tilt mechanisme" still doesn't allow the rudders to be kick-up and the foils to weathervane when hitting the beach or to allow the foil to weathervane itself freely in light winds and flat water where you don't need them.
My proposal is intended to be a step up in design with respect to the Moth setups.
Wouter
