Charlie,
Great job there yeah, 400ft is not that high up at all, so yeah, looks reasonable. 40mph in a 60degree dive is slow even for a trainer, I think, but hey, climb to 800ft, and it's easily possible. And I know many guys take .40 size trainers up over 800ft all the time. I was thinking vertical dives, but close enough. I'll have to time some dives next time I'm at the field .