As for the Sheldon method being 'stupid', quite the courtesy it's not, it's quick and easy to do, and even though it's entirely possible to cut the rims to take the bike, there's a better way to do it;
When you do this, you must fill in any kind of gap, the more gap you filled in, the less room/movement there is, if there's room to put your crank in, do it, it may take a bit of time figuring and adjusting the bike to make it fit, but once you done it, it's pretty impossible to remove.
As for the Sheldon method being 'stupid', quite the courtesy it's not, it's quick and easy to do, and even though it's entirely possible to cut the rims to take the bike, there's a better way to do it;
When you do this, you must fill in any kind of gap, the more gap you filled in, the less room/movement there is, if there's room to put your crank in, do it, it may take a bit of time figuring and adjusting the bike to make it fit, but once you done it, it's pretty impossible to remove.