Originally Posted by BirdieLane
Certainly not robbing her and I agree you have a good setup. As basically said above, choose your specs based on long term technique development and not short term wins. I kept my daughter at 26 inches for over a year playing at national level when I knew 27 would help her compete but also potentially hinder technique.
As for polys - I think while using such a light racket like the PDL, you might stay away from them because with lighter rackets, more shock is sent into the wrist/arm/shoulder and the poly will just add to that. That said, there are some 'softer'/stretchier polys out there now if you were dying to try it you could do a blend.
The flip side is - it is important to also keeping in mind that lighter doesn't always mean better for technique/arms/wrist/shoulder, etc. We've found that groundie and volley technique is more solid with heavier rackets...the lighter rackets can be harder to maintain control/discipline even though you might be able to swing them faster. And also, heavier rackets, with good technique can significantly reduce shock to wrist/arm/shoulder ...but ONLY with good technique. If technique is bad, it's the opposite so don't rush or consider until technique is very good. But if her technique is already great (i.e. she's rarely late, has a great contact point and extension...i.e. letting the racket to the work) then I'd experiment w some weight.
I think our progression was (strung wt):
Age 10: 26, maybe 10oz;
Age 11: 26, approx 11oz;
Age 12: 27, 10.3oz;
Age 13: 27, 11.2oz;
Age 14: 27, 12.2oz;
That's BirdieLane and everyone. Your feedback has been very helpful. I forgot we had one regular BPD so she hit yesterday going back and forth from the BPD to BPD-Lite and I noticed a slightly heavier ball and more plow through with the BPD and so I'm going ot modify one of her BPD-Lite's to that of the BPD which is pretty subtle. Weight would increase from 10.3 oz. to 11.1 oz.; 3pts. HL to 4pts. HL; and Swing weight increase from 298 to 308. I'll have our swinging expert make the adjustment and I'm told this is simply placing .8 oz. lead tape around the throat (12.1 from the bottom). The racquets are pretty similar but the BPD will give her a bit more power without making a drastic change.
She is 12 and 1/2 so that falls in line with your progression BirdieLane. I like this conservative approach and I agree 100% to stay on the conservative side. She is strong enough to handle the weight increase and the swing weight increase is subtle.