Scott---That's exactly what I was thinking of doing. First, I would not have unlimited funds to build a huge arsenal. Second, I feel I am a fairly good bowler, but not necessarily good/great enought to be able to pick and choose between slightly different drilling layouts for whatever particular shot that is out there. Thus, following the "keep it simple stupid" KISS moto, I was wanting to rely on the same layout but different ball specs/surface treatment to give me the different read of the lane. Any other adjustments would then only be with ball speed/line/etc.