We just did our field. The pres of the club and I looked at it, but for the paperwork involved, he decided it was not worth the time. We could have gotten 10% of the total. For what we did, it amounted to less than $100 and would have taken more time to fill out the paperwork than it was worth for that. We went through some contractors locally and got a great deal of it donated. They put down a clay mixture on the runways and taxi ways which were then wet and rolled after grading the ground and then the mix. It is flat, hard as pavement and ended up costing us about $1000. Way cheaper than we would have had to spend doing it on our own. For us, it was the best way to go. Sure is nice to fly off of.