Help me, smart people

This is how the v-rack is attached to the rack
This is my new v-rack. The connection is simple and strong, but it’s too simple for me. It doesn’t allow for access to my hatchback – I could probably get it open a tiny bit, but I’m afraid of the sharp edge of the square bar and what it would do to the glass of the hatch. What I want is either a quick and easy way to remove the rack entirely, or to undo the back clamp and pivot the whole thing forward around the front clamp, or even better, a quick and easy way to loosen up the connection once I take the boat off, so that I can slide the whole rack forwards so it’s not interfering with the hatch, and then slide it back and tighten it up again.

Some of the ideas I’ve had:

  • A quick release skewer from a bike. Not sure if I could get the size I want or whatever.
  • Something like a cable clamp, preferably one that goes over center and locks down really well.
  • Something like a cotterless hitch pin.
  • A plastic knob or wing nut to make it easier to unscrew.

Better ideas, or better explanations of my half-assed ideas above would be welcomed in the comments.