convincing someone to try proper fit?
ok, I'm not going to get into what method is best used to determine proper fit, but I think most people will agree that a proper fit is based on your position while riding the bicycle, vs your position while stopped. (not talking about standover height here, but adjustment of the seat, bars etc.)
I've got a friend who is going to "try" bicycle commuting, and see if it's comfortable for him, but he refuses to adjust the seat to a place where it will be comfortable while riding, because he wants to be able to put both feet flat on the ground, from the seat.
I think a decision like this will quickly end his riding decision, as, at least for me, that type of position makes riding a lot harder.