Thanks! Using the stab in the middle pic will be the easiest, and it is nice and light. I think I'm a reasonably competent flier and I think I'm a fairly competent builder, but I am only just scratching the surface of design I have arranged the wing so it is at somewhere between 0* and +1* in relation to the H-stab. For the test flights, I will go with the thrust angle that is already built into the Trojan's firewall.