That's the big drawback to any -fixed- foils, front or rear, you cannot adjust the angle of attack so if you do go "nose down" you're going to go VERY nose down if it's on the front, or get a ton of drag if they are on the rudders.
I do not "feel" a ton of drag when sailing with T's in the gusts; I get get more acceleration! IT IS important to understand what is happening with T's.
As the bows dive; the T's SING the whole hull; you are balancing the pitching fore by opposing it at the back of the boat; all that can happen is the hull SINKS.
Is there More drag than if they were not there? Yes; but you are not upside down or stuffing the front beam in the water and dumping power!!!!
IMO T's allow you to drive the boat harder and so you over come the small amount of extra drag.
