DECEPTION PASS / BOWMAN BAY -- General location
Mainlanders might drive I-5 to the Burlington/Anacortes Ferry/Rte
20 west exit (south of Bellingham, north of Everett). Follow the
signs to Deception Pass.
Peninsula folks might take the Port Townsend - Keystone ferry, and
drive north on Rte 20. Turn left just after the bridges.
Michael can just drive north.
Pass Lake / Bowman Bay -- Detail
The parking lot for Pass Lake is right off Rte 20 (if south/westbound and you get to the bridge, you missed it).
To get to Bowman Bay, turn west off Rte 20 at Pass Lake, take an immediate left on the road to Bowman Bay. Follow the signs to the boat ramp.