When you chose your skater, there will be a menu with "spend money". Go to "cheats" and buy the cheat that says "now you see me, now you don't". This will turn skater invisible but you can still see the clothes and skateboard. To only see the skateboard, got to create-a-skater (if easier go to edit clothes and gear). Take off your skater's shirt (it will only work with a guy, I know how you feel), take off you skaters shoes (barefeet), and any watches or brachalets on your skaters arms. Other words take every thing off your skater except the pants (no comment) and put breifs on him. Now go skating with the cheat I told you to buy on. All your see is a skateboard rolling around doing sick tricks.