I d love this thread to be an opportunity to have more in depth discussions regarding stability, and structure/stiffness issues.
Sailing Anarchy is a great place to diversify my vocabulary, I was hesitating to compare the ongoing debate to a mumy rant at the hair saloon, but could no find the appropriate vocabulary , so "TART BUN FIGHT" is the perfect answer to my question Thanks again Waynemarlow.
"Contrary to what some might think, super accurate control of foil rake isn't needed, because the sailor automatically adjusts it with body weight movement. So long as the foil is set up accurately with toe in and rake being the same on each side, the way you change between modes doesn't really matter."
IMHO you should pay attention to the relative angle between main foil and rudder foil.