Flat track/dirt track - anyone have (or have built) one [possible non-moto]

Hi all

I am looking at putting in a turn track that would be like a mini version of Rossi's Moto Ranch. The idea is to have a track that kids and adults can have fun on, and for the experienced rider, really push the limits of front and rear grip at a slower speed than a moto track (which is already on the property) or road racing circuit. And without having to set up for jumps. For the big bikes, we would run a 19" front/rear setup on non-knobby tyres (like an AMA singles setup).

A couple of quick questions for people who have actual knowledge:

1. What is the best surface material to use? It has to allow sliding but not be ridiculously skatey/slippery. (i.e. we want to be able to carry some lean angle and not have to tiptoe around)

2. How much prep work is involved? (We want to ensure that it doesn't require much maintenance, but we have a bobcat, tractor, attachments to prep every so often if necessary. We also likely won't be able to water it other than rain. Again, we don't want something that will suffer a lot of degradation as would a MX track surface)

3. When constructing the track, does it only need to be rolled when it is laid, or does it require re-rolling every so often. Like I said in Q2, we have several attachments like spreader bars and things, so dragging some mesh behind the tractor every now and then is not an issue.

Really appreciate the advice and/or any links you may have.