Ted's number is 360 374 5195.
Sure beats the turnaround on a moped from Wilsons after a day of fishing that stretch. I believe the distance is around 15 miles of some pretty spooky streches on a bike or moped at 25 mph. Done it too many times in the rain and cold to ever want to do it again. Bring 2 days rations if you have to hitch it.

You might even consider Wilsons to Leyendeckers for a nice drift with your kid. It is a much better stretch to moped, only about 3-4 miles of good safe road. It's got plenty of good water and would probably more enjoyable than fighting the hordes. The fish gotta go by there to get to the hatchery too.

Hope you catch a quality experience with your son and even a fish or two.
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Matt. 8:27   The men were amazed and asked, “What kind of man is this? Even the winds and the waves obey him!”