I've hauled many a rider home in the back of a F-150 8' with two PT 2 x12s. I prefer to back them in and if I drive it in, it's scary. If a ramp breaks, all the fun is going to be over! Fortunately, most of the tractors I bring home don't run, so I have a 12 volt winch that I chain across the back of the truck bed and winch them in. Easier on the nerves, but I worry about ripping out the the "not so hard points" in my truck bed. Always something.
So I got a 6' by 12' trailer and the stress level went way down! (so did the bank account)