I keep mine covered with moving blankets in garage when not in use. I use Simple Green each time I set it up and wipe it down completely, then use pledge on it. I also use a synthetic plastic duster about every 50 runs while set up.
7 ft. sections of 2x4's and 3/4" plywood has kept my track safe and sound for 2 years! Kids and adults can walk and jump on it and my track stay put exactly where it was the last time I tested.