A few months ago I flew my inflatable iRocker SUP to San Diego and had as great time, paddled in Mission Bay and San Diego bay. However, the baggage handlers beat the bag up. I already had holes in it after the trip down and there were skid marks all over from the belts and stuff. I fear the bag it came in probably isn’t going to survive another trip. I’ve searched for large duffle bags, preferably ones that can roll and found very little that could accommodate the dimensions I need 37’ X 18" X 15".
I’ve also considered wrapping it in some kind of plastic.