[trux]

Mike, not sure about D3, but my Suunto Mosquito worked rather reliably for dynamics. Of course, you cannot expect it recognizes you start swimming if you swim on surface. And recording surface swimming, triggered manually, with no depth data would make only little sense in very most cases, so I am not surprised Suunto did not implement such function.

But if you swim near the bottom, which is rather usual at dynamics, then the depth sensor triggers the recording rather reliably and automatically. Why exactly can't you use the automated mode? Is your swimmin pool less than a meter deep? At Mosquito, the depth sensor fires up the free mode at the depth of 0.45m, which is quite sufficient for almost all dynamic swims.