One thing I decided to try.... for my club measurements, I plugged in the distances for my irons with no spin. For instance, the 6 iron is rated at 180 yards, but my notes (which is the beauty of Kat's calculator, it's all based on our own data) tell me it will go 186 with no spin, so I plugged that in for my 6 iron distance. From there I just adjust as needed with spin.
Seems to help when the calculator gives you a % of power to hit. Below is a replay at BPB #15 using the calculators suggested power for my 8 iron with no spin since I plugged in the 8 irons distance as 156 not the rated 150.
Something to ponder, only problem now is knowing what each club does with no spin for the different balls I play. I tend to jump back and forth from ball to ball, depending on inventory and ability to restock during the round if need arises.
http://www.wgt.com/replay.aspx?ID=86e9e44d-6a86-4ca1-92fd-a2ef01160ef1