I use to live in this one neighbor hood, and if you went down this one dirt trail into the forest you would come across a field with a really big hill. So this hill was 30-60 feet tall (I was small so I forgot size). But it was big and I could tell since from the top you could look down on the roofs of the houses in the neighbor hood which were all two floors. Anyways this hill, it was big, one steep side facing the forest and the other being more gradual going down. This gradual side how ever, at the bottom of the hill it would curve up a bit right before meeting the field.
So every winter we would get my fathers old wooden and metal sled, a real sled not one of the plastic pieces of stuff everyone rides now. Anyways we would take turns on this sled, laying down on it, and going full speed down the hill. We would zoom down and hit the curve at the bottom after going down so far and so fast only to be flung a few feet in there air. Doing this over and over again competing for distance on the landing.