I guess I don't really understand the question...man made snow sucks for building honestly (unless it's perfect), the only benefit to it is you can point the guns where you want the piles. Is it that you can't drive a cat....cause that's a bigger problem than man made snow. If you can drive, just push snow from different places and make piles then shape them however you want, once you have piles add rails/kickers to your liking. If you can't drive a cat, find a good (or even just decent) cat driver that's willing to help, get in the thing with him and explain where you want things to go and how you want them to look, he'll be able to move snow where ever you want....then add rails (if the driver is still willing to help, use the cat as much as you can/your comfortable with for digging/burying/shaping, then touch up and make pretty with a rake). To get a cat driver on board, a 6-pack never hurt (just make sure they don't drink it first...things don't come out exactly as planned, haha).