Charcoal in gas smokebox?

[buckeye024]

I just read a tip in another post about adding a couple charcoal brickettes to the smoke box of a gas smoker to help with the smoke ring. How many of you all do this and do you get results? Do you do it for the smoke ring or taste? I'm intrigued...help a newb understand!

 

[fatback joe]

Just for the smoke ring. Not generally enough in there to affect the taste.........just don't use matchlight or something along those lines.