5. Jettison Your Vest
Always pack your raincoat, waders, boots, socks, underwear, and one rod and reel, at least. If space is limited, though, the first thing to lose is your vest, or your fancy chest pack, or whatever, since you can always just keep your fly stuff in a plastic bag. Of course, the best packs are those you can travel with as your carry-on. Keep your iPad and phone in it as you fly, and rotate in your fishing gear when you get to your destination. Just be sure your knife stays in a checked bag.