Huh. I wouldn't have thought of truckers as being a$$ holes. Most are just doing there job and going home at the end of the run. We don't stay at a lot of "truck stops" (what I have been calling travel plazas but many here seem to call truck stops), but when we do they almost always have areas where RV's are good to park for the night. They are always inviting and welcome our patronage. I can't say I have had a problem with a trucker in a travel plaza....ever. I also haven't seen any lot lizards, or maybe I'm just not looking. :)
Most of the time we prefer casinos or box stores like Walmart. Always by invitation, never had a problem. We have had a few security issues over the last 25 years of RV'ing, always in a Campground though. Keep it locked and keep on the lights.