Your tune doesn't matter when towing, as long as you never exceed 1,250º pre-turbo exhaust gas temp (EGT). So as 69mach1377 cautioned, don't even think about tying onto a trailer with a hot-rod tune unless you have a pyrometer with the thermocouple (sender) mounted before the turbo (pre-turbo).
You will quickly discover that the performance tunes will reach 1,250º in heartbeat, and it is much more difficult to maintain 1,200º to 1,250º when towing up a grade. So a good towing tune is much better for towing. You still have to drive by the pyrometer (EGT gauge), but it's much easier to maintain 1,200º to 1,250º as you climb the pass with a heavy load.
Don't underestimate the weight of those "little" Bobcats. They're like hauling around a big chunk of lead, so their size is deceiving. If you climb a mountain pass or even a big hill with a Bobcat in tow, you can quickly melt an engine if you don't drive by the pre-turbo pyrometer.