don't, winter park is overrated (they like to think they have steeps, ha), though copper has some good terrain and the parks alright when they do maintenence. just get the 5 mountain. abasin, vail and the beave should satisfy any off-piste needs (but going home is a much better solution) and keystone and breck both have top notch parks. just beware breck on weekends...everyday is gaper day.