I have been towing a 5X10 cargo trailer with my TJ since I bought the TJ back in 2001. The TJ says it can tow 2,000lbs. I have towed more than that without incident.
Whenever you tow with any vehicle the trailer can affect how the tow vehicle will perform. Just be careful, slow down, and use common sense.
01 TJ, 34 Super Swaper 34x10.5 bias, Winch, locked, belly up, some armor, 4.0, 5spd