Nolo, you can bring the cows! They can stay on the slopes from the end of April to the end of October. They should keep it nice and clear and eliminate the need to mow a good portion of the slopes. A lot of the "old" ski areas in New England were built on the slopes of farm pastures, this was how many farmers made a little money during the winter.
Skier_j, your "hill" was formerly a farm. There were many more as well, but most are long gone now. Sheep Hill in Williamstown, MA (named because the sheep grazed there in the summer) is one that easily pops into my mind.
I think it's a great idea Nolo, you bring the cows, move your home there.. Hey, the Ski Area would have a GREAT ski instructor to head up their program that way...and the owner would be someone who is enthusiastic about skiing and would treat it like a real ski area instead of a place to bury their money from other businesses and neglect.
From what I have heard, Maple Valley fell to poor management.