Jim,
That looks great as a bolt on option.
Kodiak,
I was thinking along the same lines as you did. Installed in the center on the front of the horizontal support. When the leg is slid up, the top portion would not hit much there, only have 12-16" sticking up. Nothing up there to interfere except the top link. I was thinking a hitch pin( with several holes drilled in the pipe/rod ) instead of a nut welded on and bolt type set screw thingie.
Either way I like both ideas guys.
Jerry