I did a ride with Got Mud CNJ 4x4. My jeep was not ready, but I had a killer time. These guys/gals are some great people, that like to have a great time. Everything was done within legal limits. If you are in the NJ area, check them out.
Website LINK: http://www.gotmudcnj4x4.org/
FACEBOOK LINK: http://www.facebook.com/groups/157243377663152/