There's nothing we take that we can't replace;but when we go for our hikes, we put all food away. Tablets go in the truck and phones go with us. We leave our camp stove and cooking stuff out, although well usually slide it under the trailer. In 15 years never had anything stolen. Most loops we camp on, the only folks we see are rangers and other campers. We do lock the deadbolts on the doors. The "lock" for the pull handle is about a 3/32 thick piece of aluminum that you could prolly break just by forcing the handle...no tools required.
As for stealing the trailer itself, between the jacks, power cord, water hose, sewer hose and awning, it would take 5-10 minutes to get the thing ready to pull out of the site. I'd like to think the rangers would stop someone who's pulling a trailer with any/ all of those things dragging out the back.
