My suggestions about reinforcing wasn't so much to make any trainer crashworthy, rather to survive harder than normal landings...which most ARF trainers won't do more than once or twice. All beginners are going to land hard and often. I saw a Sig Kadet ARF take a nosewheel landing that cracked the firewall a couple of weekends ago. It should have survived that one. I'm only suggesting common sense things that should have been done in the ARF factory in the first place. Sometimes, it's sad to see cheap ARF trainers break from a beginners landing when it should have held together.