in my experience i much prefer bands to bolts for training with

once when i crashed with a wing bolt planes, it ripped out all the area that held the wings onto the planes, instead of having to cut open the fuselage and spend ages repairing it, i just cut slots in for dowels and changed it to elastic band wing arrangement

i suppose once you get to a good solo stage, bolts won't be much of a problem as you won't crash as much as you are a better pilot but for trainer planes, i think elastic bands are the best way

but i have heard that the bands should theoretically snap off and release the wings in a crash...never seen this actually happen in a crash though