start small. my park has a 4ft, 5 foot spine, and a 6. i had the 4 just fine. i was afraid to do the 6. so i dropped the 5 cuz its 1 more foot. no biggie. then i tried the 6. its 1 more foot. no biggie. easy.
lean in on a 12ft oververt=]
i ride right into quarters, i have a 7 foot with over vert i hop sideways into