RE: Rocket assisted
I do think that the AMA does not reconize or condone rocket assisted RC planes. I built a rocket powered RC delta some years ago and was powered by 2, 'D' rocket engines. Was fun but expensive. The cost per flight was about $7.00 per flight. I never did fly it on a scantioned AMA meet, but did fly it several times at the flying field.
Before you go through the expense of the rockets, check with the AMA.
Larry