Err I don't rollerblade... but I air the hell out of my bike, and ride minis and street on my skateboard. It's just like going w/ the flow of the transition, it really would come naturally especially when you just have the boots on your feet.
is is a vert ramp or just mini? it actually should just come naturally. if its vert you kind of squat at the vert parts of the ramp and then like 'stand up' as you come back to the tranny. its weird like dirty said you cant really expalin it it just heappens