I started working on this right after Christmas. I bought an axle at the Show last October and have been debating making a trailer or a tow dolly out of it. Thought I would see what it would look like as the tow dolly, so I fired up Sketchup and went to work. It took a while as I would add something in and study what 'if's' for a bit.
I have no idea what that Orange line is under the RH tire as it will not erase. Think it has something to do with running a Windows program on Linux.
The winch parts are from a boat trailer. I saved that some time back. It has a strap instead of cable on it.
The ramps will have expanded metal in the bottom of them. I have no idea if this will even work, but it looks cool. The extra colors are so you folks can see detail easier.
I can add different views if someone wants a better look at something.
The right hand ramp is up in the tow position, while the LH is down for loading. About a 30° angle.