I had wanted to build a trailer to haul groceries and other crap but about a year ago I found one that cost less than what I could assemble one for (about $90 IIRC... an Aosom 2 child trailer). It has stood the test of time and still functions beautifully... and it has a nice reliable hitch.

Badmother, I really like that hitch you fabricated... it's another awesome testament to your ingenuity.