sliding down a down rail, no matter where it is, requires the same amount of talent and ability. if you can slide down one rail, you can slide down another. its the same thing, different place. but being able to spin all four ways onto a box, and be able to pinpoint it, requires a whole different set of skills. plus, you have to be able to slide after you spin on top of that. and both ways. consistently. im definitly down for someone that can spin all four ways.