Yeah you'll want brakes to pull a Bolt around.
We have the EZE-Tow dolly (
https://cartowdolly.com/--it has surge brakes so hitch up and go) and pulled our Bolt all over the place with it. Works like a champ. (Yeah don't have the Bolt anymore...lease was up.)
You'll want to put a knife disconnect on the Bolt's 12V battery as you have to disconnect it so the car doesn't engage the e-brake (look in the owner's manual on recreational towing--there is a procedure you have to do before disconnecting the battery--the car really loves to automatically engage the e-brake at a moments notice LOL). I forget now but I had to do the procedure in a certain order, if I didn't the car would freak out and honk the horn when connecting the battery up so keep the keyfob in your hand at that point so you're ready for it. If I remember correctly I had to close the knife switch and immediately close the hood otherwise once the car booted up it would get an "intrusion alarm".
I was extra paranoid about that knife switch too: Afraid it may inadvertently close while on the road. So after opening it and disconnecting the batteries I would wrap 2 or 3 rubber bands around it just to prevent contact in the event it accidentally closes (it never did but can't be too safe).
I've circled the knife disconnect here:
Here is an Amazon link to the type of knife switch I used. As you can see it is a tight fit in there.