dan,
i have a generac 25kw model. the trailers arent that bad an idea. you can hitch that guy up in about 30 sec. connect the pto shaft in about a minute, and you are ready to make power. it much easier than trying to mount the thing on the 3 pt hich, just one pin, i have a wheeled trailer jack on the tongue of the trailer , just push it where you want it, drop the pin in the hitch when it is lined up, wind down the jack a few turns and swing it into the horizontal position. takes a little longer to connect the pto shaft, but not much. start the tractor, and engage the pto, look back at the freq meter, i dial the speed up untill the meter reads 60.7 Hz. you will need to figure this out for your tractor/gen. combo.
attach the correct plug into the recepticle on the tractor and to the recepticle on the sub panel, flip on the breaker on the generator, flip the transfer switch to "GEN" and the lights are on.
i have used the winco's , coleman's, honda's, lincoln's, and generic chinese generators, nothing holds steady voltage and frequency under changing loads like this fellow. those gasoline models are ok but when they are hit with a load change you can here the motor lug,been there done that. something about a diesel and a big revolving armiture that just does the job soo much better. i have even shown my wife and daughter how hook this up. you are going to love it.
alex