Hi Jeff I wouldn't attempt to put a 24 on a 4WD ute on my own, pretty easy with 2 people though. . They go onto the trailer easier than a PT because you drop the tailgate put the front wheels on it and then push/lift the rear of it on, very easy. I could/would not attempt to work on a mower on the ground.
I made up another test piece with hole centers at 600mm. This achieves the 800mm lift height without it looking unstable. I used 25mm strips as I was thinking that I might be able to get away with using 25mm square tube for the scissor arms. Using the 600mm centers it means the bottom only requires 115mm of travel to lift the table to 800mm. I assume this will require a scissor jack to lift it

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