Originally Posted by SpongeDad
I think the point is that you can hammer a bit more violently without throwing the bike off the rollers. I've never actually tossed / pushed / jerked my bike off rollers but I'll never fault a man for plinking around with tools.
Interesting point. Then perhaps 'hanging' the entire roller assembly, instead of riding on caster wheels will give you a no-resistance linear movement, even if only a couple of inches.
edit: sorry, bad idea (hanging)...after viewing the video above....