If schule isn't rough, then what is it? The only time I have ever heard the term is in disc golf and in reference to bushes, shrubs, long grass, weeds, etc on the edges of fairways.
As far as Crazy, I think he does alright most of the time (live commentary can be difficult). What he could do better at is letting the moment breathe. He has a tendency to want to fill every moment of the broadcast with banter when there's often no real reason to keep talking. And in his quest to not have any quiet moments in the broadcast, he tends to do one of two things...he gets very repetitive (how many times does he have to remind us we're watching DGP.tv through the wonders of the interweb?) or he tries too hard to be colorful and diverse in his descriptions and ends up struggling to find words and rambles instead.
It's probably impossible for him (they don't call him Crazy for nothing) but if he dialed it back from 11 to about 6, maybe 7, he'd be great.