Since it appears you like to build stuff....here is my current project.
I have been working on the model on the computer for a while now and finally decided to buy parts and get started.
A-Frame tongue jack for tilt/dump and the bed and walking axles rest on pillow block bearings on a 1.25" cold rolled shaft. It is purpose built to haul my Miller Bobcat 250 welder or a 125gal water tank. Trailer should be able to haul #1000+ without issues.
Had three nights to work on it. Looking like a trailer finally.
I need to spin the tires around. I'm too OCD to leave them running backwards.
Here's a section view of it fully extended.