on a rail do i go 2 pedal or crank?

Either, but with grinding on the pedal you are less likely to get the unicycle jammed up in the rail and come to a stop. Having said that, grinding with the crank feels a lot more stable to me. Its entirely a personal preference thing.

Either one is better than grinding on the bearing housing.

haha yeah

its like brian said…grinding on the pedal is better…
but its harder too…on skinny rails u will have to grind ur pedal and on much wider rails u can do either one…or on blocks u can do either one…

pedals better cos you dont get stuck and you dont have to jump as high
i use pedals for all.

how you gonna tell skrobo what the definition of a street rider is and you dont even know the answer to this stupid question?