The best spot for coho on the east side is probably the beach in front of the Bait Box at Possession Pt. They raise some net pen fish there and they generally come back in early Sept. Penn cove up by Oak Harbor has a run too... but that is mostly a snagfest.

For the best chance at catching a migrating coho... I'd fish the west side.

Bush pt.
Ft. Casey
Lagoon pt.
South Whidbey State Park
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