The pin box is 21k rated. The trailer is about 12k (add another 5k for the boat).
I did add the air when the trailer was hitched up, and on a level surface (in my garage). I let some air out of it today, but it still leans toward the rear.
I'll be sure to allow for some extra time before we head out this weekend.
I also wanted the Tri Glide, but it was not available for my trailer either. I worked directly with Ultra Fab (who makes the TrailAir), and ordered through eTrailer. If they had a TriGlide for my trailer (Venture Tech frame) I would have ordered that.