jig,
Try fishing closer to the tribs until the end of july...

I like 30--40fow but don't be afraid to into 20ft.

After you have marked the struture (humps & dips) you will be able to consentrate your efforts..

I run dipsys and worm harness but sinker and worm harness do just as well if not be better

Keep your speed down thru the hot spots & pick up 2&3 eyes a run.

Good luck ,

Moose