Just a note about your chocks:
Met a 5w'er in AK who had 6" - V's in his brand new 3500. Seems he drove out without the 5w. After quizzing him about why he didn't fix it after $10,000 was paid via the insurance company, he admitted this was the second time.
My lesson number 1-- after putting the 5w in it's proper location the first thing we do is place our wheel chocks, tight!
Lesson 2-- after the walk-around and we're ready to leave-- all cords, antennas, lines, hoses, junk picked up, and the rig is "PROPERLY" connected, the last thing disconnected or removed is the wheel chocks.
BTW, we put chocks on even when flat, and even if we stay connected. Habits are hard to break. If you don't have a routine, write it down, then follow it every time.