Im not an experienced flyer but I do have an Alpha 40 trainer that uses Rubber Bands, and I have come to hate them very much. It used to not bother me but now it does. Ive had to use up to 12-14 bands to hold my wing down securely in flight,so that it would stay rested in its saddle. In doing so ,the sheeting around my leading edge was crushed.[sm=disappointed.gif] I had to use that many bands because I started noticing that after I landed my plane that my wing was moved slightly off center each time.
I am now converting my wing to bolts. Save yourself some time of having to go back and make this change. Go with the Bolts.