Hey, I found a spot outside of Rockford, near belvedere.

Travel down Newburg Rd., heading to Belvedere and after about 15 minutes or so of driving down, you will see a little sign on the side of the road, with a gravel driveway and a beaten up house. That house is abandoned, and so are the like 10 barns on the property. There are trails running ALL THE WAY back into the woods and forest, where you are no where near the road, so you do not have to worry.

And the trails keep going, and there are a few dips with puddles I took my gf's tracker through. There is another spot down the road, but it floods bad. You better go with a second person...I'm taking my truck this weekend, So anyone can feel free to message me if they are in the area.
If you message me back, I go out to Rockford on the weekends. I am actually going out there on Saturday, to see my gf and my daughter. Text me at (847)343-1770, and we can meet up and I'll show you where it's at.