I do the same....
My 350 Ford sits high and I keep my drop hitch in the receiver most of the time. I had some lady in a Kia Sportage rear end me. All I felt was a little nudge. It totalled the Kia. My hitch was right in the front of the motor, through the ac condenser, radiator, water pump and the front of the block. Her hood went right under my step bumper, No damage, took the dirt off my step plate. /forums/images/graemlins/grin.gif
A little tip, I keep my hitch swabbed with grease. Comes right out. Just don't lay it inside your truck, keep it in a plastic bag so you don't grease your carpet.