RE: rubber bands for wing hold
One note concerning metal bolts. The very fine threaded bolts that commonly come with many arfs make marvelous berings!
A large diameter course thead bolt will resist self removal in flight far better. And the nylon bolts especially 1/4 20's are the least likely to 'self remove in flight'.
Don,t laugh I have seen far to many arf's loose a wing in flight due to the fine threaded metal metric bolts.
Dmowery
Please do come back with a picture of your 'working' airplanes and the Velcro set up. This does promise additional utility for certain types of airplanes and I seriously want to know how you have set this up.
Thank you
John