[Marwan]

i have a shark shield myself, it gives me some piece of mind, though it zaps my buddies and sometimes me, lately, i keep it on me but turned off, if i see a shark (the viz is generally very good out here), i will switch it on and exit..
I know that switching it off kind of beats the purpose, but im cofortable that way..given that in years of spearfishing i had very few encouters