Friends of mine have used snowboard and ski bags for flying their bows. Pack clothing and other necessary travel materials around the bows to protect them. The bags have a solid backing with wheels to roll them while moving from place to place. I was always going to buy one for the next flying hunting trip but haven't planned such a trip so haven't used them myself. Should be able to pick up a good used one right now at any budget store. Worth a look. Also much less conspicuous!