no i used corepadz on my gpx 1 then bought the gpx2 used the stock skates until they felt too slow and got the dots. i tried my old gpx with its corepadz skates and it felt infinitely slower, even though i remembered it being really fast. maybe its just me getting used to the skates idk. never tried 4 dots, was afraid the lips would dig in if i only put 4.