Thats what we were wondering about. Most of the weight will be sitting secure on the 4x6 when the roof is open, only 6ft. of the roof will be out on the end. We were wanting to put another post right at the end of the 6ft piece hanging off the end just to be safe though.
Im about 185lbs and I hung off the end of it, it doesnt seem to be going anywhere, but i would feel better with something there. Just the thought of another 16' 6x6 makes me want to give golf another try instead. Ya know?
Another option is to put one of these floating foundation thingies we have left over under that remaining 6ft piece and try to run a 4x6x12 up to the end.