RE: rubber bands od broadheads?
Lining them up with the fletching/vanes might not make much difference but, I like to keep all of mine aligned the same.
TRY THIS: Get some teflon plumbers tape..the kind that is about 1/4" wide and wrap the threads of the broadhead with 5 or 6 wraps...wrap up to the neck of the broadhead. When you screw them in they will tighten up nicely and you'll be able to adjust them to the same orientation. When you need to take them out they will also come out easier...