Thanks for the info Tiny. The mid-range plan is add a lowboy and tractor to move the equipment around without having to hire it out. Not there yet as the cost of moving is not more than the O&O of a truck and lowboy.
You have confirmed my thoughts on lowboys -
No pony motor - the ethanol wreaks havoc on all our small engines, last thing I want is a job shut down over a 5 hp Honda that won't start
Non-ground bearing - how many time does one unload tracked equipment on pavement or another nice hard surface?
50 or 55 ton tri-axle - buy more than one currently needs, I have never regretted that.
Willie I have a TK 14 tag trailer I bought new in '96. If the quality is still the same as it was back then they are one of the best IMO. With tires being outrageously expensive, an air lift third is a nice feature. No sense in wearing them out if you don't need them.
I have also kicked around the idea of a folding tail as well, like a Landoll, although they would have their minuses. Cost, maintenance and a taller load height would limit what could be hauled.