Originally Posted by
ThermionicScott
It's interesting how these things vary from person to person -- I can only do it (for the short distances that I can) when I'm providing that constant "input" to the pedals from my legs.

I think It's not so much pedaling or not, but either way you need to have enough speed to be stable, and a lot of weight on the pedals. If your feet aren't loaded up then you can't really transfer your weight side to side. Try it either mashing, or with one foot extended.