I have some questions for the aerodynamic theorists. It occurs to me that the horizontal stabilizer has a very limited function in a pylon racing application. It has to (1) counter pitching moment from the wing (2) provide necessary ‘up’ force for 30 pylon turns (3) provide enough throw for takeoff & landing control. So why do most racing stabs have a standard symmetrical shape? Unlike aerobatic planes, they never (intentionally) fly inverted or have to use the same degree of down throw. Wouldn’t some sort of dedicated airfoil & incidence combo be more efficient towards providing a less drag? If so, what sort of engineered airfoil & arrangement would be best? What is a typical tail drag component % relative to overall model drag? Is it worth worrying about? Do stabs with very sharp L.E. radii have any disadvantages in terms of pitch sensitivity to the wings wake or buffety air for example? If so, would a blunter nosed shape of the same % thickness be better? What about hinge line, would a top skin hinge be better vs a mid or bottom hinge assuming all were sealed & there were otherwsie no construction concerns?