Originally Posted by Know Bull
One more thing. Fast Eddy told us this weekend that he puts his brisket trimmings in the empty spots in his cooker. He thinks its increases moisture and flavor. It will increase your cooking time, but no more so than having to heat a water pan; you may wish to consider that solution before you resort to a water pan. If you use trimmings - see my comment on foiling the bottom.....
I too have an FEC-100 I use for competitions occasionally and doing some cooking for the masses for my son's cub scouts etc.
You can put a battery backup UPS of some sort on to handle the electrical issues. Just make sure it can handle the amperage draw and for how many hours you'd like to be covered. If the 120 is much like the 100 it will draw very little amperage after igniting the pellets. I'm thinking 1/2 amp or so based off my memory.
I really like this thread, and hope you post some more as you use it more. One modification I made to my FEC-100, which I don't think would work for the 120 is a small grate of expanded metal attached to the outer side of the firebox for me to add wood chunks for more smoke.