And talking of pied pipers.
My pal Jaap alerts me to this article.
I must say, I rather like it - the gist being that the Shark Shield is OK (albeit with caveats) whereas the rest is essentially crap.
In reality, the best technology we have is probably first aid. Modern skills and medicine mean that the chances of shark attack survival are around 80%.
Get a couple of these as having used quite a few, I can attest that they really work - and then, don't do anything stupid and enjoy the ocean!