Jeffreys Bay Pro 2015

[The Mighty Sunbird]

Neutron bomb. Reefs remain undamaged

[Beerfan]

I'm wondering what would occur if there were 4-5 GWS off Bondi or Manly in summer. Mikey Baird likes a wave, he might get edgy.

Raise the shark GST and also introduce a "human consumption tax" to deter the Sharks.

[foamy]

thats a weird one , the salmon.

we had then in plague proportions there for a few winters from '04 to 2010. Haven't seen then since, not sure why but they aren't coming this far north anymore.

In 2011, subject to tonnage of catch limits, commercial netting of salmon north of Barrenjoey Head was allowed again because of those very high numbers of salmon that you noticed.

[PeepeelaPew]

...

[Davros]

It will support the stamp duty gap when rates increase and the mkt returns to parity. I say table it now, sliding scale on shark types.

[Nick Carroll]

I'm wondering how MrMik is planning to compare the SharkShield to the surfboard implant.

Like do any of youse even have a clue how often (or not) you've been checked out by sharks while surfing? A shark knows you're in the water way before you'll ever see it. Mostly it won't come anywhere near your sensory circle and if it does, it's probably because it doesn't give a shit about you and is after something else.

Does anyone really think an electronic shield is going to stop a big shark if it decides to go you? It's like waving a fcuken magic wand in front of a truck.

You can say a shield thingy works all day long, hell you could wear it every surf your whole life and think Hmm, no shark ever attacked me, it must have been the shield. Although almost every surfer never suffers a shark attack or even a reasonably close encounter.

So yeah unless you see sharks around you and get a bump every second or third surf, how can you ever "compare" these things with each other, much less really test their effectiveness?

[the prawn]

Uh oh, Nicholas has been paid off by the Shark People.

[Hollowed out]

I'm wondering how MrMik is planning to compare the SharkShield to the surfboard implant.

Like do any of youse even have a clue how often (or not) you've been checked out by sharks while surfing? A shark knows you're in the water way before you'll ever see it. Mostly it won't come anywhere near your sensory circle and if it does, it's probably because it doesn't give a shit about you and is after something else.

Does anyone really think an electronic shield is going to stop a big shark if it decides to go you? It's like waving a fcuken magic wand in front of a truck.

You can say a shield thingy works all day long, hell you could wear it every surf your whole life and think Hmm, no shark ever attacked me, it must have been the shield. Although almost every surfer never suffers a shark attack or even a reasonably close encounter.

So yeah unless you see sharks around you and get a bump every second or third surf, how can you ever "compare" these things with each other, much less really test their effectiveness?

Thankyou Nick, that is just straight out common sense and the whole marketing of these so called deterents is just so based on scaremongering.

the very fact that they purportedly work by emiting an electrical field from the source that in effect makes that water 'electrically charged' tells you that the field is lucky to be so weak as to not give you a shock that it would be lucky if it covered a couple of feet around the source. If you think a 15 ft GWS is deterred by that..buy one and sit out there with a huge grin on ya face knowing the bastard your grinning at is gunna get it, not you.

The ones the divers use at least have a serious enough charge that it is uncomfortable (apparently) to touch or hold, but the ones on board or in fins have a minuscule charge

[steve shearer]

Does anyone really think an electronic shield is going to stop a big shark if it decides to go you? It's like waving a fcuken magic wand in front of a truck.

Probably not, at that point. But there's fair whacks of evidence that sharks and GWS in particular are quite cautious predators so they've probably checked you out before deciding to commit to any kind of bite.

If that shield buys you time or dissuades a cautious predator then it's done it's job.

I'd say the jury is well and truly out.

At the other end of the spectrum I've just realised all my wetsuits are coated in jewfish slime.

[crabmeat thompson]

At least it's not whale oil, I s'pose.

[Beanpole]

Do you reckon if you had a wild Fcuk session before climbing into your wetsuit that you might attract more sharks?

[Drailed]

With what, the jewfish?

[black duck]

I can say with confidence that girl jizz on you're wang will not have a shark attraction effect if surfing on the sth coast around the spots i surf. 15 years of performance research provides reasonable empirical evidence. Dolphins and octopus notwithstanding. You read it here first.

I cannot vouch for any spots north or south, especially the far north with jewfish flavoured jizz and those sticky-out point breaks.

[PeepeelaPew]

...

[MrMik]

I'm wondering how MrMik is planning to compare the SharkShield to the surfboard implant.

I'm pondering how to best use electronic equipment to measure the voltage, wave form, frequency and maybe field strength emitted by the devices in vitro. I have no intention whatsoever to use any sharks for testing.

I think there might be a big risk of training sharks to become immune or attracted to these devices, namely by offering them yummy baits as reward for ignoring the unpleasant spasming of their Lorenzini ampoules. As stated in the ads, it causes no permanent harm to the sharks, so some of them may learn to associate the electric fields from the devices with (almost) free food. To test similar devices for effectiveness against real shark attacks, I believe a secondary, much stronger averse stimulus would need to be applied if a shark bites the bait despite of the device being active. Something like an air-bag deploying and severely janking the jaws apart so that it hurts for days, maybe even accepting permanent damage or death for the attacking animal. That might be ethically acceptable, provided that the device being tested has a deterrent effect on most sharks.

[MrMik]

Like do any of youse even have a clue how often (or not) you've been checked out by sharks while surfing? A shark knows you're in the water way before you'll ever see it. Mostly it won't come anywhere near your sensory circle and if it does, it's probably because it doesn't give a shit about you and is after something else.

Well, I know of one:


So I want a device that would stop the beasty from coming any closer in such a situation. That means that the electrodes need to be in the water during turns. I have my doubts about the Surf Safe in this scenario, and a bit of in vitro testing (with shorter than the recommended 900mm electrode distance) might be enlightening.

The other main scenario I have in mind is an exploratory nibble by a bored GWS. It may not have any evil intent, but I'd rather not get involved in the teaching of adolescent GWS's about their environment. I am convinced that the majority of GWS attacks on humans are exploratory bites and that their frequency can most likely be reduced to near zero by use of electronic deterrent devices.

[MrMik]

Here is a link to yet another electronic shark deterrent device: http://bluvand.com/shop/bluvand/noshark-surf-version/#

Has anyone here tried one out? I think it was formerly known as ESDS : http://www.seabreeze.com.au/forums/Surf ... ence-ESDS/
http://www.esdshawaii.com/

[steve shearer]

English as second language?