Originally Posted by
WonderMonkey
Here is a video of a guy trying to learn to use rollers. While I am sure that you quickly get the hang of it I would throw this thing all the way through my garage door and set it on fire using some handy gasoline.
I think I slipped off my rollers maybe 4-6 times total in the first month of using them, and only once or twice in the 5 years since then. The thing is, you have no forward momentum, so you just fall sideways; as long as you have a soft surface and know how to fall, you should be OK. Some people recommend putting the rollers in an open door frame the first few times, so you have a support on both sides.
Looking down at the rollers or your front wheel is a bad idea. Best to look at a fixed object in the middle to long distance, and use your sense of balance to keep the bike straight.