Honestly, I have never had to reload mine. I fill the charcoal rings as full as I can get it, take 8-10 briquettes out of the middle and light them in a chimney and then put them in the depression where they once were. Then I assemble it and cook.
If you are using water, make sure you put boiling water in the pan. That way you don't burn fuel heating cold water. Also, it's really the wind that sucks the heat out of a WSM, especially in the winter, so fashion some sort of wind block to cut the wind.
"Ron Rico, Boss. You can call me Captain Ron..."
The Naked Fatty!
Southern Q Limo Elite Gravity Fed/FEC-100/Memphis Pro SS/PBC/LBGE X 2/SBGE/Mini BGE/Nomad Pellet-matic/Good-One Model 42/WSM X 2/Cookshack Smokette 008/Weber Performer/Saber Cast 500/Weber Kettle X 2/Weber Smokey Joe/WGA/UDS/Coffee Roasting Gasser