Woods trailer ideas

Lowe's sells a very small trailer with short expanded metal sides and a slide in rear gate for around $400. I have been considering buying one for about 6 months.

Change the coupler to 2", flip the axle so it's under the leaf springs to get a little more clearance and make it ride level hooked to a truck or SxS. Extend the top to make a box. It's already got lights and of course brand new tires. I figure that it can be done for under $500.

I've built several woods trailers in my life and all of them were functional, but made out of old rusted boat trailers, and leftover construction scrap. I spent a lot more than $500 on the last one and it wasn't street legal. I like the option of being able to pull a woods trailer with my trucks too.