bnb3...quickest..easiest thing to do for your birds:
tape a plastic ruler across the top of the middle of the wing and then tape ,lengthwise, the underside of the wing with packing tape. the kind that is clear with the strings running through it. That should be sufficient for most of your flights...... now if you guys load your planes down a bunch and pull up out of a full speed 100ft dive.....i can't gurantee all that will hold. but it could be pretty cool to find out. If you guys are just starting out....I don't really see you stressing the plane too much.....
Congratulations and good luck!
Have Fun!!!!!!

-RC Sumo