Go to New Jersey. Unlock the drainage pools. Go into one of the pools. Go fast along the edge of the pool. Grind the edge. Do not hop while you are grinding and you will keep going around the pool. If you start to go out of control while you are grinding, jump off just before a curve in the pool and land on the sidewalk. When the amount of desired stats are reached, jump off just before a curve in the pool and land on the sidewalk You can do the same thing on any level on a round object that keeps circling. Alternately, go to a level that has a long object that you can grind on. Go to the beginning or the end of it, and approach it at about an 80 degree angle while tapping Back to go slow. Start to grind, and again do not hop. Keep grinding until the stats indicators (the green words in the upper-left corner that tells you how many and what kind of stats you will get if you land the trick you are doing) appear. Then, jump off and at the same time hold Left or Right and land on a flat area.