On Mon, 27 Mar 2017 19:30:28 -0700 (PDT), Tim
wrote:

Looks good. For myself I'd add an extra support through the frame (front to back) and would have moved the axle a leedle further aft for a tad bit more tongue weight. But otherwise. It's looking good!

This is just something I am pulling around with the lawn mower so I am
not really too worried about tongue weight. I doubt it will start
swaying at 5 MPH. I may still end up moving the axle back a little
since I want to raise it up a bit for better ground clearance. I have
some 4x4 Azek I am thinking about putting in as a spacer.
Once I drop a piece of 3/4" plywood in there it will be plenty stiff
enough for anything I am likely to be hauling around.
I really do not want to make this thing too heavy because I plan to
hang it on the garage wall when I am not using it. I need to be able
to pick it up. Right now I doubt it is more than 30-40 pounds.