Info from the coast guard:

-The regulation is set to expire in August.

-Enforcement of the 100 yard zone is going to be dependent on reports of violation made by the captain of the protected vessel, except in circumstances where a enforcement boat (coast guard, local law enforcement, WDFW enforcement, etc) observes obvious problem behavior.

-Warnings will be the most typical responce to violations.

-Permission to pass within 100 yards can be granted by the vessel captain.
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Mike Gilchrist