I rode there a couple of times right after I got the KLR, still had the stock tires on and had never ridden on dirt so it was a bit of a handful as it was quite muddy. I also didn't want to get stuck on my new bike.
I know a guy who lives on the dead end of Joleno Ln that backs up to the property. He told me about it and claims to have ridden ATVs around there a bunch. If the consensus is that wardens will only check for registration I would probably try to ride there more as it's only 10 minutes from my house. I will throw on some gear and head over there tomorrow afternoon and do a little recon. The DRZ with Trakmasters and a couple of years of dirt riding under my belt should make it a little more fun than the last time.