I have a 3/4 pin type pedestal base on my rear bench and front deck. Have just been using the rear bench with the standard seat mount since my boat is currently only used to get to and from hunting spots. With spring around the corner, I'm looking to get a pedestal for each base. The rear bench will have a small deck running back to the transom and the bow seat will be used to operate a foot controlled trolling motor. Not sure on what length to get though. I'm a pretty tall guy at 6'8", and my fishing partners are both about 6' 1". I'm looking at 11" and 13". What length do you guys use?