By "doubling-up" do you mean using two bands, or doubling over a single band to make it tighter? I have done the latter on some weapons and it has a significant effect. It seems adding another band would not do as much as far as increasing the firepower, though I haven't tried it. Has anyone tried both, and if so, which is a better solution?
One other quick question. Does anyone else find the triple catapult to have a short range? I doubled the band over on it and it helped, but everything still bounces right in front of the enemy's lines and then up and over the castle. To make it effective it needs to be moved forward about 6 inches.
Yeah? More firepower is offset by shorter range.