Just in regards to the Draw Bar,
have you sleeved the draw bar so you could reinforce the joint through the first cross member member, or is it just welded on and the bar that ties into the second cross member to stop twisting of the draw bar connection.
Currently considering building a trailer out of Aluminium, just been looking at draw bar designs.
Interested in how it is done without using a larger cross member, say 4x2 and then a 3x3 inch draw bar going through the 4x2 and back to the second cross member.