Like ezgoin says,5,6,8 hrs, down around 160*-180* can't hurt.
Smokering isn't judged,although there is a thought that it could dress things up.
The FEC burns so clean,that you may not see as heavy a smokering,as cookers that don't burn as efficiently.
It sure doesn't seem to hurt the scores in competition.
As to TQ,most judges can spot that cornedbeef look in a heartbeat,and penalize ya for thinkin' you can trick them.
Hope this helps a little.
Tom-Fl