I went and checked out the perfect trails grounds today. Lots of changes in elevation (rare in Florida), fairly easy access, owned by the county (which means little oversight given that it's undeveloped), and not far from where I live. Two bummers though: it seems like transients frequent the patch and the soil is almost straight sugar sand. I knew a dh guy that built some jumps there about 4 years ago and I found their rained down remains. I wish I knew someone around here that would come out and dig with me.