I'll put you on the schedule for next Friday.
You mostly need to ride flat based but you can come off an edge at the lip.
Imagine super aggressive astoturf. If normal astroturf is 80 grit this stuff is like 15.
It definitely requires better form and you can't cheat it: I've hit the ramp a surface a few times learning new stuff... but I was pushing it. Mostly cuts. Dislocated a couple fingers, no biggie.