Bud wrote:
> I am interested in recommendations for purchasing a new/used BBQ
> trailer/cooker rig. I would like to be able to cook and serve 200
> people at a time. I prefer wood/charcoal with propane assist.
>
> I am located in Southeast Alabama.

For a ready-made answer, these folks have a lot to offer:
http://www.sybbq.com/

Despite SYBBQ's protestations, their cook-off rig would work extremely well
for concessioneering. For catering, there are less expensive alternatives.
Big Jim makes an excellent rig.