As mentioned, I never lock the doors.  The top is too expensive, so hopefully they'll check the handle instead.  If I'm parking for more than an hour is I leave the center console lid up, glove compartment open, and partially unzip the windows so it is obvious they are open.  I figure that if a thief sees that the console is already open, then they'll figure there probably isn't anything of value left in it and move on.
Last thing I do, I keep a handful of spare change in the cup holder.  If it's missing, then I know someone's been in the Jeep and I know to check if anything else has been messed with.  It's only turned up missing once when I parked in Buckhead years ago.
God help the sucker if I ever catch a thief in my Jeep!