This is really easy. First, create a new stage that is size medium, then use ice (its slippery!) to create a platform at the bottom. next put a bunch of spikes, how ever many at the side of the ice. build another platform of ice directly over the spikes (2 blocks over the 1st platform of ice). leave a gap in the middle of the second platform to make sure you can get down there. create more random platforms so there will be a place for other players to battle without you. when the game starts, get to the bottom where the spikes are, then jump onto them. You dont lose coins, but create more to collect. you will be bouncing crazily between the spikes and the second icy platform. stay there for the whole game, even if your percentage is 999%. My brother and I collected over 5k! If your confused (which I bet everyone will be) then just post a comment, and I will try to help you thnx for you patience! I hope it works you guys it did for me k I will stop typing now :P