because im friends with matt tyler
and when i was there the sign said if you do a bri flip and mess up the masonite that you have to pay for a new layer of masonite
but maybe it was skatelite idk
streetscience skate shop in livermore has a mini ramp in the back with masonite and they let scooters in all the time, but just no bri flips are allowed except for a select few of people