Threshers - one of the ultimate challenges on a yak - good stuff but of course we are concerned about long term sustainability of the population as the sport is gaining in popularity. In general we would prefer each angler to take no more than one shark per year -and release everything else and always only keep what you will consume. We reccommend using circle hooks when trolling bait (plug for our new "Circle Hook" Tee!). Also it is good practice to allow for a drop back after a strike when trolling- which is usually by the tail. This will increase your chances of getting a mouth hooked fish which of course improves chances of a release.
Dont keep babies, not really cool and definitely not sustainable. Everyone has their own opinion, but I would say maybe anything under 150Lb should be released. This is the best thing we can do to protect the species - release babies.
We would also like to see all females released in case they are a breeder. Thats a perfect world - but you asked!
One of our non-profit partners is the PIER Institute and they are doing a lot of research on T-sharks, which is why we like to financially support them.
http://www.greenfishmovement.com/Scripts/partners.asp. Check out some of their research when you can.
Also - we have Conway Bowman on our Ambassador team who fishes daily for local Makos on a fly (awesome stuff), plus of course Sammons and Jeff Krieger who all have good opinions on this topic also
http://www.greenfishmovement.com/scr...mbassadors.asp
Good idea on some local seminars - we'd like to work with some of our Ambassadors on this also.