You can sometimes glitch it if you keep holding forward and left or right and when you hit the ground from using the ramp you spin like a top on the ground and you keep getting acorns over and over until you stop holding the directions

you van also just get a car, press forward for like a second, then hold forward + left or right and mash jump. gonna do a lil spin then big spin. Repeat, profit

https://imgur.com/a/5XluXfc

Add a shotgun shot at the end for extra height