If I add high bars, I'm afraid I'll also have to add a banana seat and a sissy bar--the shape of my cruiser's frame looks an awful lot like the stingray bike I had as a kid. Seriously though, I took tds101's advice and removed the lay-back seat post and put the original seat post back on. My knees don't go over my toes at 3:00 pedal position, so hopefully I won't cause myself knee pain even though I don't have sufficient leg extension (I refuse to raise the seat so high that I can't touch the ground with one foot while seated). I'm still trying to figure out posture, I've even done a few cow/cats(yoga reference) while riding.