NTFDAY is correct. Reason being the pump that pushes lubricant through the transmission is driven off the input shaft. If the transmission is turning, even in nuetral, without the motor running your lubricated surfaces will dry out and burn up.

If you are only towing a short distance, you can stop every few minutes and run the motor, or even leave the motor running in nuetral. Another alternative, if it will fit ok is to put the rear wheels on the dolly and tie down the steering wheel so the front weels stay straight. If you notice that is what most tow truck drivers do when towing a rear wheel drive car.

If you do disconnect the drive shaft be sure to leave a yoke in the tranny tail shaft so fluid doesn't drain out. Either find an extra one, or leave the drive shaft in and tape up the rear U-Joint so you don't lose the caps and wire it up out of the way.

Have a safe trip

Pat