More fifth wheel questions.

I have the louvered tailgate and would buy another if necessary. It takes one step out of the ritual necessary to hitch and unhitch. And my tailgate would hit the trailer if I had it down when hitching at an angle. I have had to do this in the past, and the notched tailgate makes it easy peasy. You'll get no mileage improvement, at least not measurable, IMO anyway.

Don't have those brush flaps, never felt the need for them, and I think they look really really ugly. We don't venture offroad so it's a non-issue anyway.