As has already been mentioned, the only things to worry about are dangling bits and divers who will tell you there is only one right way.
My preference is hose mount as it's one less piece of gear to keep track of. It's right there on your reg. And I personally don't care for anything mounted on my wrists. I clip my Cobra on a D ring that is convenient to read the gauge and take a quick heading without unclipping. If I need a little more serious navigation, it's easy enough to unclip.
My preference is hose mount as it's one less piece of gear to keep track of. It's right there on your reg. And I personally don't care for anything mounted on my wrists. I clip my Cobra on a D ring that is convenient to read the gauge and take a quick heading without unclipping. If I need a little more serious navigation, it's easy enough to unclip.