Nope. On the trifoiler, both windward and leeward foils seek a fixed depth, thanks to the forward "sensors." In lighter winds, both foils generate positive lift. In high winds that would otherwise capsize the Trifoiler, the windward foil generates negative lift to seek the target depth.



The vertical coupling is meant to be cable, which cannot push, and therefore cannot cause the foil to generate positive lift and bury bows. The feedback system therefore generates only negative lift and cannot lift the sterns. Adjusted properly, it would only increase negative lift (and drag) once the corresponding hull lifts clear of the water, since there is no point in the foil increasing downward lift when the hull is still in the water!

The traditional T-foil property of generating negative lift as bows dive should be maintained in this system not by the feedback system, but by limitting the rotational travel of the horizontal foils. Such as system would always hold the sterns down at least as well as traditional T foils (and better when the windward hull rises).

A valid concern about the system is that that the additional righting moment would mean one could sail much hotter and faster downwind in high wind, but in doing so you risk stalling the windward foil and pitchpoling suddenly at speed. (But this is somewhat true of T-foils in general, I theorize: once the windward one clears the water it suddenly stops down-lifting, and the hull pops and the bows bury.)