A good thing to do, if you have issues, is get a Travel Golf Bag, and put your rod tube inside the gold bag.... those fat f*%k golfers ( no offense to any golfers!
) get a ridiclulous allowance for their golf bags as they fall under sporting equipment ( how golf is classified as a sport and fishing, especially popping/jigging isn't I have no frikken idea ) and they seem to be the most commonly travelled with "Sporting goods"....
I did a trip across the US a couple years back, and had 65 kilos worth of fishing and skateboards in a Golf Bag, as well as another bag, and never once did they even question me....
So it may pay to by a golf bag, and dress up like a doosh bag, pretend you're a golfer, and save some cash or hassles....