The number of bags is pretty dependent on what equipment you bring. I can fit all my gear in one carry-on and one checked bag. Unfortunately the checked bag will be at 50lbs before it's at full capacity. Full load of basic equipment: mask, fins, snorkel, SMB w/mirror and whistle, bc, regs, wetsuit, light, camera equipment, spare batteries, CO and O2 testers... it all adds up. I understand how weight effects fuel consumption, however the 300+lb human crowding me out of my allotted seat space gets the same weight allowance I do. Logically if he's OK, I should get lots more allowed baggage weight... You should pay for the space and weight you occupy and put on board. AND you should be able to utilize the space you pay for.