Moving X-Country Pulling Box - Advice?

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I will soon be moving cross country by myself, pulling the Boxster on a U-Haul auto trailer with my Jeep. Due to the length of the trip, I will be spending a couple of nights in hotels along the interstate somewhere. My concern is, how do I have peace of mind while trying to get some sleep that no one is unhooking the trailer and pulling it away with their car? I plan on locking the trailer down to the jeep with multiple chains and paddle locks but still it is a concern. A real professional would probably just break into the jeep and drive them both off.

Anyone have options for securing my toy or am I being over concerned?

Thanks.