Don't put ideas into my head!!! I have a net and skytrak I set up in my backyard and have been hitting a ton of balls lately and have been developing some soreness in my wrists from the sheer repetition. I do like the idea of graphite as being a very high handicap, mishits are not all that uncommon.
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Just a thought that may not apply to you, I bought the F9's with the graphite shafts (atmos) thinking I could pick up some swing speed with the lighter shafts and I have had a bit of trouble adjusting. I have no doubt I'll get there but I actually put my F7's back in the bag today to test out again. I wouldn't have done that if I didn't have the Bridgestone Championship coming up but if I'm still hitting these well I'll probably game them until after the Championship when I'll have the rest of the season to switch over properly.
All that to say I would try to swing them before I swap out, your mileage may vary but it's worth thinking about.