short bed - sliding hitch vs sidewinder?

I am towing with a 5.5 foot box and an F150 with a slider hitch. Granted my 5er is small but I have also towed some of my friends larger rigs with no issue. It also really depends on how big the "bubble" of the cap is. If its more flat than round you should be good not to hit the cab of your truck. To date I have never been in such a tight area that with the hit in the back position I could not get out of BUT I plan my stops and other things very well and in large areas so I can get around.

I looked at the superglide hitches but they were way to expensive I felt for what I needed and the amount I was going to tow.