sfo is my home airport and i have found (save the moat dragons*) that "team sfo"-ua is by far one of the best, most efficient, most polite and most adept at dealing with folks who happen to be an "orthopedic shoe terrorist" like me. ^

*the moat dragons on the other hand are absolute incompetent "i can't think outside the box" morons and iirc, are not "team sfo" but a separate private company. they are downright rude and do not see anything other than "you cannot have more than two bags"....i had 3 bags but i was being proactive as the "3rd bag" was a small tablet pc bag which i knew would have to come out of my wheels for x-ray so when i packed, i left space for it as it would go right into my wheels as soon as i was done with security. the little witch would have none of it even with me explaining it to her. "you have 3 bags, you have 3 bags, you have 3 bags"....

so like those who have thought about "dropping trou" when a screener is giving them grief, i simply dropped to my knees, opened my wheels and proceeded to (and very slowly i might add) re-pack my wheels and hold up the line. i thought the little witch would blow a gasket as she started yelling at me that i couldn't do that right there. i told her that if she wanted me to have 2 bags, i will have 2 bags and that if she had a problem, she had better get her supervisor. i finished packing walked about 3 feet from her and dropped to my knees and unpacked the bag with her looking at me. i thought the pax behind me was gonna die laughing over what i did and he told me that he wished he had the stones to do what i just did.

but again, that was my experience with a moat dragon and is not representative of team sfo as they rock afaic.