At just under 6 feet I have been measured by three places now at 29 and using a loop. I actually shot a 27 today, just so I can feel how the new Defender works and there is just no way I could get used to shooting something that short. Also shot a 30 Old Glory and I felt like I had to reach back to the back wall of the lane to hit the stop. Just wanted to feel hand shock and stuff like that, you can only shoot what they have at the shop, suppossed to be getting more in later this week I think. I still might try a 28.5 one of these days just to see, but the 29's typically touch the corner of my mouth about perfectly sooo...