[quote name='KingBollock' timestamp='1380012948' post='2219370']
Or you could do both at the same time... I was recently playing a tune that required the root and octave to be played at the same time. Actually root, then root and octave. I am very much a pick player. While holding the pick between thumb and forefinger, I down stroked the root and then on the upstroke I plucked the octave with my middle finger at the same time and it worked a treat. I use a very thick pick and tend to play quite softly, so there wasn't even much, obvious, difference in sound. I was well chuffed. After messing around with that style for a while I found it incredibly useful with many possibilities.
I also started including my ring finger for playing stuff like (please excuse my current inability to work out the intervals, or whatever you call 'em...) 4th string 12th fret, 2nd string 14th fret and 1st string 13th fret (I really do know the name for this, I'm sure of it, but it just won't come).
I basically used the pick instead of my thumb, and it allowed me to play everything else without having to retrieve my pick from my gob. Dead handy.
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Being predominantly a pick player, I use this same technique quite regularly when gigging certain numbers. It works really well.