I wish I had a camera system.... Well, maybe not. Wouldn't use it in the Fall/Winter anyways- I fish deep this time of year (150'-250'). I hear they are a pain in the a$$.
I can't say they would be worth the effort other than watching the strikes.

If I did own one, I would be looking for hard or rocky bottoms. I like to ring the dinner bell (bouncing the ball off the bottom). The chart I linked to shows the GP area as sand and mud, but there are real hards spots also.

Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter