im way to lazy but go on vimeo and look up the edit keppin it urban
should help and inspire you
there were a couple edits I belive that included a rollerblading water ramp
then there was another one that some kids built one for skiing, but something happened and it broke in the first cople of days... but that may be of no use. i'll see if i can find the blading edit
Keepin It Urban from Andy Hahn on Vimeo.