The ski is tied down, and doesn’t move an inch....
The front seat of my V70R (Not the 960 pictured) flips forward to center & support the superjet perfectly, so I don’t have to worry about it shifting, and off / On loading at the ramp is effortless.....
The key is securing everything front and rear so you don’t have an issue during a short stop.
I live in Portland, Oregon....and the one way valve was purchased and installed by Waterdawg.
Trailer, I don’t need no Stinking Trailer.....