Yeah the mods shown in that link are a bit over the top, but with a little creativity, the gourmet can be turned into a smaller version of a WSM with a much smaller price tag. I had great success modding mine and making a lot of good food in it. All I did for the bottom is mount a piece of sheet metal that slid over the intake hole. It worked perfectly to regulate air. Raising the fire off the bottom of the pan is another must do mod.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)