Great Idea, pulling aerobatics, but still it doesn't guarantee disabling the hijackers. I've looked into carrying Mace and pepper sprays in a flight bag, they are almost of a similar size to deodorant cans so there shouldn't be much trouble carrying them. Give them to cabin crews as standard equipment, they are the ones always in the first line of attack, whether it be a hijacker or another abusive passenger. Have a couple secreted in the flight deck as well, nothing like having this stuff squirted in your face judging by reations I've seen on TV.