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Darryl, the pics show some sexy looking kick up rudders on some/earlier? F14’s as well as the t-foil rudders.
Notice that the t-foil rudders are not kick up but have their own special up/down carbon sleeves
Is that because the upward forces they generate don't work well with the typical kick up system, or are you just trying to keep the t-foils at the lowest drag angle all the time? I can imagine that if the rudders were put up or down the usual way the t-foils would act as huge brakes....
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The kick up system we made first and when we fitted the T foils it seemed a better idea to be able to raise and lower the T foils always at the same angle of attack to the direction of the boat and not, as you say, create a braking effect if they were to kick up. (I have tried them with a kick up system (the T foils) and they do work well and the braking effect was of no great inconvenience except if I tried to sail off the beach with the rudders partly swung up).
I thought that you were looking at your own T foil system? (or was that someone else?)