I have followed this thread from the beginning and have to relate my story. For 30 years I have volunteered at the local hospital aide fund raiser. This year for the first time we did not have the benefit of a 20 ft trailer to move goods from the collection barn to the fair field and resorted to pickup trucks, also volunteered. We have three massive barn loads of donated goods to move in two days. Imagine one huge yard sale. I was loading a truck and as it filled up the tailgate was closed and my focus was on where to pack the next box into the truck, not looking for a trailer hitch. At almost a run, I ran into the hitch. I continued loading for the rest of that day as well as the next as there were no others to take over my position. The knot on my leg grew to baseball size as the entire leg increased in size as well. For the next week things seemed to be getting worse, not better. I finally decided I needed to see a doctor as my foot filled with what appeared to be blood under the skin, and the pain shooting up my leg every morning when I first got up brought me to tears. Alter a Dr's visit, an X Ray, ultrasound, visit to the second Dr., several hundred dollars, and eight weeks things returned to normal. If you drive the truck to work five days a week and only tow on weekends do you really need the hitch in all the time? As I get older I've discovered I don't heal a quickly as I used to.