The skateboarding should work just fine by the way it's just an issue with Swap Magic, but if you are using that you can create a separate Skateboarding disc, CD and DVD work for the Skateboarding, Neither the Kid or the Guide rip anything out of the game, just that note for the Skateboarding via Swap Magic, but that is not to say that the Skateboarding does not work, because it working fine, the issue is Swap Magic itself rather than the rip
for ESR I added my own notes
Metal Gear Solid 2 Substance - Skateboarding notes [To Play, select SKATEBOARDING hit O then immediately keep tapping the L2 and R2 triggers together until you see pink]
You could make a DVD with just the Skateboarding also it's not that hard to do to be honest, I'm not a skateboarding fan myself so lost interest in it rather quickly, but otherwise it did seem fun, if the timer could be killed off it would be great, but then again it would just continue playing forever, so a pause code for the timer would of made this more fun for none skateboarding game, gamers.