I tow my small Zodiak around on my two place snowmachine trailer in the summer and have a 20HP motor on the back that I hate taking off and on so I usually leave it in place. The problem I run into is that even when I put all my stuff in the front of the boat there is barely any weight on the hitch so it bangs up and down when I hit bumps and I am worried that it might break someday. I have been looking at these pintle ball combos http://www.amazon.com/CURT-45919-Cha...s=PINTLE+HITCH
and thought it was the answer to my issues but it looks like they only recommend using a tow ring with the pintle closed and when using a normal 2" couple like on my trailer they say to leave it open. Has anyone tried using a 2" ball coupler with a combo like this and leaving the top pintle part down and locked? I'm not even sure if it is possible. Thanks for any help.