Mr Ali,
I have also been fishing the east trying to sight that Jewie!! in 10 years i have not able to catch one!!!, However, you best bet will be what you know! And stick to those spots..
2 years ago there was a old guy named Yarrak that i once went fishing with that said that he had caught a few 15kg- 20Kg Jewies in Malabar/La Pa..
Good Luck,,, Summer is only around the corner