Ok I took a trail run today...wife actually volunteered to be the passenger! She's survived but the hitch did a weird thing so I am trying to rethink that hitch. It swiveled around my seat post then lowered itself because of the balls attachment to the post. Gouged up my rear rack a bit too. Thought the safety chain came into play but the hitch stayed on the ball.

I think the ball is great because it can swivel on multiple axis so the seat mounted clamp needs a way to stay fixed.

Sorry I don't have pics of it mounted. Also I never got my tires and wheels yet, I just took front tires off my other bikes for now.