I've had a few guys tag their bumper with the center step, you have to turn really tight to hit it but it can happen. We don't know every ones truck or hitch set up but one simple fix can be found at
www.etrailer.com they have a good assortment of ball mounts that extend about 5 inches further back than most standard ball mounts, rated form 7500 lbs. to 10,000 lbs. and in all the different drop heights you'll need starting at 25.00 dollars. This is a no brainer if your concerned about hitting, it also gives you a 5 inch chance of not having to get your feet wet launching the boat, win/win if you think about it.