Wow! It must be great to have so much time to do all that work Mike! 🙂
Might I suggest a diferent idea regarding the Dolly Trolley?
I was thinking, rather than folding down the catch posts, what about some sort of spring loaded ramp that leads up the to the top of the posts?
That way, when the plane lifts off the trolley, the ramps pop up to make a smoother incline to the top of the posts. If the elevator was to make contact with it, it would “ramp up” rather than hit the vertical posts and break. I’m sure there would be enough weight in the plane to hold the ramps down prior to lift off. A latching mechanism could also be employed to prevent the ramps from being pushed down.
What do you think?