I'm not sure if you guys are familiar with this but two months ago we stayed at this resort in Puerto Galera here in the Philippines. The service and hospitality was amazing that they even offer their service of cleaning your gear after each dive without any charge. Anyway, when I was cleaning my wing, this guy from the resort approached me and he taught something new, he connected my reg back in the tank connected the inflator hose back to the wing, placed water in the wing, shook it a couple of times and he pressed the inflate button, all the water came bursting out of the OPV, he did this twice. I saw the advantage of this technique/style of cleaning your wing, no water would be trapped and the procedure would be faster, but my question is, does it damage the bladder? does the procedure strain the material of the bladder in some way?