to get to the 50k mark:
Get all the upgrades and the golden cart. Don't waste your time with the other tricks just get the handstand and up-and-out. When you launch, go straight up and instantly do the handstand and hold it. Once the fuel in the rocket runs out, start flipping. Flip twice while still doing the handstand. Then let go of the handstand and use the up-n-out a ton of times until you start to see blue sky when you're falling. Once you get to the ground, do as many pole vaults as you can. With groupies, all you need is about 17k worth of tricks and you should be able to get to 50k.
Good luck
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