The idea (when/if money for fun comes about again) would be to only use the trailer drive off road. Idea some of you have about pillow blocking under the pintle is pretty close. That's the way it would be designed though it needs a decent abount of slip travel in the/a yoke since it's travel will be multiplied, so to speak, since it's not exactly at the pivot point but below it. Going over humps or through gullies would bring the most extension or compression of the slip yoke under the pintle. I also feel that for this off road only application and the spacial requirements of the drive from the rear-rear of the truck to the pintle pivot location an off road limiting strap for the right side of the rear axle might need to be employed just to keep stuff from really putting some hard and ugly angles on the yokes in that short area. The big hit is a John Deere driveshaft that visually looks to fit the bill but there's plenty of time to chat with draveshaft shops and see what can be done for under $500 for that shaft. Yikes...I know- Jesse at High Angle Drive will prollly get a call for some input-
The drive is mainly so the truck stands a chance in anything slippery of pulling the trailer with a load on it. I'd guess the trailer to be 6,000# or so (don't know yet but will weigh at some point) then being able to put another 8-10,000 on top of that could quite well anchor it into any muck without help from itself.