For the last few months, I've been going legless, resting both the charcoal pan and the ECB body on cinder blocks and bricks. However, I started to suspect I was losing heat out the bottom (plenty of smoke as well), so I installed some legs on the charcoal pan today:
I bought these 12mmx270mm (about 1/2"x10.5") things for about a buck apiece. They're a teeny bit wobbly, but nothing I can't handle. I have them set so that the charcoal pan is about an inch higher than they would be if the legs were on the inside. I'd like a bit more clearance between the coals and the water pan, though, so I may replace the charcoal grate with a smaller one.
I also installed them for portability's sake. When the neighbors have their laundry out to dry, I have to move my operation down a flight of stairs to the parking lot, and it's a pain to carry cinder blocks and bricks. Here's the whole unit. Gonna fire it up on Sunday, come rain or come shine.