My brush hog has a hinged SSQA mount plate:
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You could make one on your mower with the hinge pin at the bottom and a way to lock the hinge while using:
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Then sell the idea to Trailblazer. :thumbsup:
Yes, that's another way to play the ssqa adapter plate. Did you make yours? Can you take another picture or two, close up, showing your pivots, etc? I'm definitely working through quite a few strategies...!