I haven’t driven a semi, sorry. I do however live in an urban area and if you think a foot and a half makes no difference to how easy it is to park your truck in the city then.. well.. I guess you must be a lot better at it than I am. All I’m saying is, it’s big, and inconvenient, and for me that inconvenience was not worth the extra capacity. Which I didn’t actually need to get the kart, stands and spares in the bed. I’ve since gotten rid of the F150 for a smaller SUV and trailer because I didn’t like driving it in the city. It’s easier to live with for the other 350 days a year that I’m not racing.
Sorry I tried to offer some advice. I’ll make sure I don’t do it again. I’d hate to get my other hand bitten off.