always a balancing act....you will never stop the determined thief.
It comes down to a compromise. How difficult are you going to make your own life. Talking the wheels off, hiding it under a number of tarps, etc.. might stop some thieves, but will also take you an hour or so to put everything together if you want to take off for a weekend away..
Not securing it at all is just asking for trouble and inviting the camper to be stolen.
Personally, I have secured the CT with a hitch lock and a wheel clamp. Will this stop a determined thief... probably not.. but then again , nothing will...
Make sure you have appropriate insurance for the worst case..
Cheers,