After school yesterday for about 5 hours, four of my friends and i built a pretty good jump, we had four recycling bins going and we just make a rought sketch of the jump, we made it a lot bigger then we wanted and then just pad down the snow so its really compact, its prolly about 6 and a half to 7 feet high, we're building the landing today, ( 3 inches of snow mind you in Illinois), its pretty sweet though, and don't forget to build it wide