Launch in Gig Harbor on the county side and fish along Sunrise beach, mouth of the harbor or Pt. Evans, tides depending.

That's prime BM country.

Dalco is also a good BM spot. Really you have several areas you can hit on an outing from GH.

SU's John Keiser has an excellent video that you may find interesting about fishing the Narrows for BM.
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Seacat