I was in the same situation a couple years ago. Really wanted a trailered Lang 48 or 60 but most of the time it would be sitting the back yard and so determined a unit like that was just not practical. I picked up a used Lang 48 for the back yard and another mobile unit for big parties, a Good One Rodeo. Which by the way is a GREAT cooker!
The Rodeo is just around 500 pounds and two of us can roll it onto a utility trailer easily. A few tie-down straps and of we go. For my purposes, a couple contests and a few on site cooks a year, it is well suited. Plus we have a utility trailer to use for many other things. Really glad I did not get a trailered model.