That is one seriously nice trailer. What do you do about the rain with respect to the counter top section where the sinks are? I have been wrestling with this part of my design.
Sean: Being a software/IT manager by trade and former programmer, most of my smoker design is rather modular in nature as you may have observed so far. I also don't know what I don't know yet about doing the competition thing so some of the basic components are easy to remove from the trailer with a couple bolts, or fasteners. I also wanted the option of removing the items from the trailer in case I wanted to make the unit more for just home personal use. I can reuse the trailer I am rebuilding to haul my ATV or a friends snowmobile around if I wanted to.
I would agree with others and think about what all the combinations of use you might have and then go from there. I am presently working on how to get a three sink setup along with hotwater supply and grey water collection system attached to my project for later on. Might want to cater at some point and these two items are part of the standard health code requirements in my state and local ordinances.