fifth wheel backing trouble

I’ve been backing 5th wheels into that spot since 1997 and we are in and out four or five times every year, sometimes more so I’ve had a LOT of practice. After I took out a telephone pole is was easy with my first one, a 28’ HRC. The second one, a 31’ Alpenlite with a longer kingpin to axles length, was more of a challenge but I always got it in, it just sometimes took a lot of tries. Obviously I go very slow. The new rig is a 35’ Forest River and the kingpin to axles length is about a foot longer. Envision an upside down L. The driveway is the long leg. It’s 15’ wide and has a fence on the passenger side (when backing up) and a tree on the corner of the driver’s side. You are backing around the tree, to your left so the rig is visible to the driver which helps hugging the corner. You are backing into the short side of the L with the house behind you. The short leg is just wide enough to be able to open the slides with less than a foot clearance but it’s a little wider (~20’) where you first enter it. I have friends with trailers who have looked at our 31’ Alpenlite in its spot and they say, like Breaker did, “WOW!!!! I would never get that in there.”