

That was a fun part:O)
Sorry no time to make something fancy, all in rush...:O(
And yes, I got him.
My kid still sick a bit, some kind of stomach flu, so i was able to camp my hunter at ledge and check him once in 4-5min in a case of Jade spawn.
To make long story short for near 9 hours there was no sign of Jade.
But!
I got 2 chests. Nothing special, 1 blue item + some silver in each of them.
But what was a really important is a time.
I got first chest around 7:14pm server time, after about hour or even more of camping.
Found second one at 12:12am.
At about 4:30am server time I gave up and just spam all info to 2 lvl85 hunters who was in this area at the moment.
One of them said "No thanks", other was agreed to camp but never showed up...
Well at around 5am I've logged out in hope to get some sleep (my kid was up whole night).
Hope is just a hope after all:O))
30 min later I was on my way to local CVS.
At 6am I realized there is no point to sleep at all ( need to be on my way out 7:30am), so log-in ---> he is right in the front of me.
Time - 6:10am. -1 more slot :O)
So lets see what we got after all.
7:14pm first chest. 5 hours later at 12:12am second one. At 6:10am Jade. Third chest was up at 3:12pm...
Then I thought if its 12 hours respawn timer lets come back at 6:00pm. So I did it.
No sign of spider. Not on 7pm, nor 8pm.
Around 8:30pm server time NE hunter came in hope to tame Jade.
I was waiting for him to get mini pet, so for all of us, hunters, pets r first.
And - if my calculations were correct - soon it will spawn.
Told him about it, timer, chests etc. He was so happy :O)
I was just sitting there, chatting with this hunter 'bout our hunters life and pets.
9:00pm
9:10pm
9:15pm...
My theory was almost ruined... Almost.
'Cos at 9:17 Jade was there.
1) On Kul Tiras Jade spawn timer could be as long as 15 hours.
2) Every 3-5 hours chest with blue item spawns
3) It all happens between X:10 and X:20
4) Will check yearly in the morning and then will try to check at 9:15am :O)
Hope this info will help someone :O)
Have fun and good hunting!

P.S.: Since Jade is tenacity pet I'm still thinking on what spec to put him.
One more tanko spec?:O) Got both turtles Terrorpene & Ghamoo-ra, Deadmire, Uhk'loc, flaming boar... not sure if its all tenacity pets in stable.
Way too much tanks in stable :O)