I first started smoking on a Electric Chest Smoker years ago but I have gravitated to using my Weber Performer 22" Kettle, I put 2 Fire Bricks off to one side of the grill.
Fill it up with charcoal and 4 to 6 wood chunks, using the minion method I can usually get in a 10 - 12 hour cook at 225 to 275 without adding fuel. It will keep pretty consistent temperature without any crazy drops or spikes, from time to time I do have to make an adjustment to the bottom vents. If I do need to add fuel, the side of the grate flips up so I can add briquettes if needed.
I get a lot more satisfaction using the Weber than the Electric Smoker and it's always cool to see the expression on peoples faces when they find out it was smoked on a Weber Kettle, I started out doing a couple of racks of Ribs on it about 3 years ago and never looked back. I just gave the electric smoker away last week and want something more dedicated to smoking.
Not my grill but this is how I have mine setup for smoking, if I'm smoking Ribs I'll place bricks on both sides leaving the middle of the grill open and use a Rib Rack. I used to throw in a water pan but I get great results without using water, I'll add moister later in the cook with a spray bottle filled with either apple juice or 1 part beer and 1 part apple cider vinegar, sometimes I'll make a mop.