I fly the crap out of a mini Ultrastick, which has a constant chord wing. It is not tailheavy at all and does negative snaps with ease, and will do a positive snap quite well, too, but just takes the proper inputs at the right time - the most important being to very quickly dump the elevator then unload it at the same time that I input rudder and elevator. If you were to draw a line with the right-hand stick movement, it would look like a checkmark. You will probably have to do something similar with the Seagull plane.