If you put on enough rubber bands to firmly secure the wing in place chances are that if you hit the wing hard enough to dislodge it is going to break anyway. If it is just a slight mishap the bands might allow the wing to move enough to absorb it. That is both sides of the argument. I got tired of messing with the rubber bands and decided to chance it with nylon bolts. I hit a fence post after a low speed low altitude dead stick at the end of the runway. Sheared the nylon bolts right off. The wing was unhurt.