My current handicap is a 12.3, and hovering. I've been wanting to upgrade the shafts in my MP-53's, but there's a lack of legitimate fitting services here in central CT, and I'd be pretty much going in blind. With my relatively low ball flight, and inconsistent iron play (even with lessons), I think these shafts could help me get to that single digit I've been chasing for the past couple years.
To test these out, I'd get plenty of range sessions in, as well as my weekly 9 hole league, and 18 to 36 holes on the weekends. Here in CT, we have varying playing conditions. Courses can be bon