I learned with Tower Trainer 40 with 40 LA also,

Tower Trainer is though bird, I hit the limbo pole during a fun fly and it had less damage than I expected. The same pole cut clean several other planes like Avistar wing clean the same day.

Of course speed, angle all determine the damage maybe having O.S. 40 LA heped there.

I had 30+ minute flights with Tower Trainer with a single tank, and 40 LA, it is hard to beleive.

Only the sticky covering is pain for repairing, nothing will match the color and becareful monokote does not stick easily and the trim solvent also is a solvent for the paint.
Monokte Trim sheets are handy for repairing the plane as they are thicker and have adhesive.

Good luck and enjoy