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Topwater Caranx Ignobilis: Giant Trevally (GT) => Tackle & Techniques => Topic started by: Jay Burgess on April 16, 2010, 08:52:27 PM

Title: Weighing GT's - Japanese method
Post by: Jay Burgess on April 16, 2010, 08:52:27 PM

Noticed the way that a lot of the Japanese weigh their GT's by the use of a big flat board placed on top of an analogue scale. Does anyone know where you can buy scales like this that would be suitable for the task?

Title: Re: Weighing GT's - Japanese method
Post by: Peter Morris on April 16, 2010, 10:25:21 PM

Check the credits at the end of channel tens ' The Biggest Loser' show Jay......few cheap sets of scales on offer after the series. :o ;D

Title: Re: Weighing GT's - Japanese method
Post by: Chuen Fan on April 16, 2010, 10:48:36 PM

ROTFLMAO...!!!  ;D ;D ;D

Title: Re: Weighing GT's - Japanese method
Post by: Chris Young on April 17, 2010, 06:45:49 AM

Well played Peter, although I think they'd be buggered after that workout, not made to bottom out so often :o

Title: Re: Weighing GT's - Japanese method
Post by: Jarrad Heritage on April 17, 2010, 09:42:05 AM

Accuweigh in Willeton Jay,

Address: 19 Yampi Way, Willetton, WA, 6155 
Phone: (08) 9259 5535 
Fax: (08) 9259 5568 
Email: [email protected] 
Website: www.accuweigh.com.au (http://www.accuweigh.com.au)

Mates of mine use them for hiring weights each time they get a new boat put into survey for load testing. I've been there myself and they've got everything.

Jarrad

Title: Re: Weighing GT's - Japanese method
Post by: Peter Morris on April 17, 2010, 10:02:11 AM

Quote from: Chris Young on April 17, 2010, 06:45:49 AM

Well played Peter, although I think they'd be buggered after that workout, not made to bottom out so often :o

 ;D ;D....Not wrong there Chris.

Title: Re: Weighing GT's - Japanese method
Post by: Gary Prerost on April 17, 2010, 01:00:38 PM

Is there a there a formula ie length by girth measurement that would give you a weight that would be accurate I know fly fishermen chasing W/R Tarpon in florida have it down pat.

Title: Re: Weighing GT's - Japanese method
Post by: Chuen Fan on April 17, 2010, 01:47:20 PM

Gary, if you do a search on the forum you'll find the formula for estimating weights of GTs. There was a thread on it quite a while back.

Title: Re: Weighing GT's - Japanese method
Post by: Jon Jarvis on April 17, 2010, 01:54:05 PM

Ive got a set of Averys Jay. My spring scales only go to 50kg but think that would generally be enough. Calibrated every year.

Title: Re: Weighing GT's - Japanese method
Post by: Stephen Polzin on April 18, 2010, 05:57:44 PM

I use a cheap set of bathroom scales with a board on top.  Pretty easy and accurate enough. 

Title: Re: Weighing GT's - Japanese method
Post by: Lars Nielsen on April 29, 2010, 02:41:09 AM

The formula never made the least sense to me. If you want to know the weight of a fish, you weigh it.

The safest way to weigh a GT is to use a carp/catfish weigh sling and a normal set of Salter scales. You could use an IKEA bag too or something similar. Just make sure the bag is thoroughly wet so you do not ruin the fish's protective slime layer.

(http://s4.postimage.org/S4T4A.jpg) (http://www.postimage.org/image.php?v=aVS4T4A)

Title: Re: Weighing GT's - Japanese method
Post by: Travis Heaps on May 07, 2010, 02:59:38 PM

This is so simple my brain hurts wondering why i havent seen it mentioned before...there must be a reason. Why not use bathroom scales, stand on them without fish, stand on when holding fish- simple maths and takes maybe 5 seconds after a photo. Someone can support you if its rough and gt fisherman seem happy with a kilo or two tolerance which is within the accuracy of a decent set of analouge scales.

Title: Re: Weighing GT's - Japanese method
Post by: Chris Young on May 07, 2010, 04:03:02 PM

Trav - that might work for the little fellas but I doubt there is a set of scales that will weigh me AND my HUGE GT's  :o ;)  ???

Title: Re: Weighing GT's - Japanese method
Post by: Johan de Vlieger on May 08, 2010, 06:12:48 PM

I know what you're saying Chris !!
I won't get up a damned scale even if my wife's begging for it so I even wouldn't consider to step on it in the presence of some tiny ass full musculated fellow anglers (with or without a huge GT !!) ;D
Another issue : a huge GT seems like a coral trout in our arms 8)
Maybe it's time after all to put some more attention to the scale (without a fish)...