Both the Comp Bobcat and the UltraFlash are very strong airframes ... On the bobcats, for the bigger engines i have always strengthened the boom sections with carbon rods and expansion foam, as well as laminating the insides of the wing panels with heavy carbon. Nothing snap rolls or lands like a BobCat

The UF could use some beefing up around the nose section for any bumpy events on the runway, and the control surfaces have the possibility of laminating, so I would suggest some reinforcement there as well.

Be responsible, and never point into the flight line, people or property when performing any manouvers, especially high G stuff ..

3rd flight on this plane ... im really liking it .. straight axial pattern like performance ..
http://www.youtube.com/watch?v=n8VP4TjRlNI