I have towed an M101A2 behind my JKU, which has a hemi. You forget the trailer is there and it is no issue and a fine pairing. The A2 and A3 have surge breaks, which work just fine on wet or dry pavement, gravel roads, two tracks, etc, but reportedly not well on snowy or icy pavement. An M101A1, which I also have, is about equally fine but no breaks, both better and worse in some ways than the surge breaks.
I also have an LJ and I think it would be fine to tow an M101 A2 or 3 for modest distances at 60mph or an A1 for shorter distances though I haven't done it. A TJ would be pushing it I think for all but low speeds or very short distances, just not long enough to tow well.
JPK