I have a track in my back yard and I am working on making another one at my friend's house. The only problem is that I can't keep my jumps in the same shape for more than 2 weeks. I have packed the dirt to no extent. I was wondering if anyone has any ideas on how to make it more packed. I have some carpet that I was thinking about laying over the jumps so it gets more traction and the rain won't wash the dirt away. Let me know if anyone else has any good tips. Thanks.