I have given up on the out side area in the dirt due to the unpredictable weather and the strain the dirt puts on the equipment. I now have some outdoor carpet with rubber to play with in the garage. It is a lot easier on the equipment and I can play in all weather conditions. Best part is when I am done playing I just roll the carpet up with the rubber on it and I have the garage back to store the car in.
Here is a video of the play area. I also laid the carpet down over the ramp and base for the demolition building used at Indy which makes a great loading platform for the track loader to load trucks.
http://youtu.be/HLkQNzaVESM
Thanks for looking.
Travis