thats just an idea though.. not much of a reality....
maybe you should try to get a group together since your the one with the track barriers....
I had another idea, i could cut 2'x2' squares out of tar payper and them make some sorta barrier to put on the sides. I could make some corner peices and straights and whatnot. Kinda like lakeshore's foam track sections except out of tar paper. Then i could put velcro on the bottom of them and have little velcro straps that hold the peices together. Good idea, is it not?
i love visuals...

EDIT:
About how much is a peice of tar paper that covers at least 200 square feet gonna cost me?EDIT: I thought of an idea for the barriers. Its perfect in every way except that it will take alot of work and time to make. If anyone makes this, they are my god....
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Enjoy! I'd love feedback