I've got one that when I was young it got dropped, thrown, rode around in the bed of a pickup on gravel roads. It's been submerged in a river several times and spent a week under flood waters. It's still one of my best shooters. Doesn't look too sporty tho.
What kind of truck do you have with a steel sleeper floor? I drove trucks for over 35 years and all my sleepers had aluminum floors covered with carpet.