Hey guys... since you're talking about putting in something to distribute the heat, thought I'd bring up this older post I put up with a picture of my previous versions of my smoker, but also my version of something to distribute the heat. The picture is the last one and unfortunately a little dark. I'm not talking about the first picture which is of 2 baffles I made. That does work, but.. it's a bit tedious to work with.
I made it by using a regular cooking grate, and some angle iron and bolts with big fender washers. The angle iron was cut and drilled and laid out on the grate. Then bolted to the grate. So this allows the meaty goodness to drip down and fall into the fire which is key; that creates for extra smoke and yumminess. :) But the thickness of the iron and its shape makes a huge difference in evening out the heat.