I’ve owned three GN trailers, pulled with 4 different trucks, and never broken out a window, or even come close. I actually think it’s easier to back a BN than a BP, as a BP seems to jack-knife more easily, but it does take more room (a longer distance) IME. During the years I owned two different BP trailers, I missed what I consider the greater predictability of backing the GNs!
Mentally, although my goal is, of course, to back the trailer straight, the minute course corrections I must make over slightly uneven surfaces – such as backing down our gravel drive onto the matted trailer parking area, or over pasture at a trail head, or in the grass at a clinic – make me visualize the trailer moving backwards along a slightly wavy path. Think a little to the left, a little to the right, and so on, resulting in a relatively straight line.
As for the plug in the bed, that feature was always included with hitch installation, and I used that location exclusively with my 8-foot bed pickups. Now that I’ve got a late-model one with a 6.5 bed that has higher sides, though, it’s more difficult for small me to reach the in-bed plug and much easier to plug into the bumper, so that’s what I’ve switched to for the last couple of hauls. My trailer has plenty of cord length and frame gaps under the nose I can access, so there is no danger in dragging the cord for my particular set-up.
