https://www.hiddenfallsadventurepark.com
This place was great. A huge network of trails, motorcycles allowed on all of them, low price and friendly staff. It's in the arid Hill Country near Austin, with trails ranging from flat and easy to steep and yikes!
I learned that, with a little pogo action ala Meg Braap, my TBR7 will easily climb a two-foot vertical ledge. (I did stiffen up my front shocks. That was critical.)