older thread, but my two cents..
I have a tandem 16'er but built a single axle 6x12 for the buggy.. Moved the axle forward a bit so there's no more than 50#'s tongue weight empty.. I can easily pick it up and move it around or hook it up.. I can also pull the trailer quite easily with the mule. Probably use it behind the mule more than behind the truck..
Very handy little trailer.. 15'' tires, 3,500# axle.
You want to be careful moving the axle forward it’s easy to get a trailer that doesn’t tow for [bleep]
