Lisabuela,springbeach, winghaven,pt robinson as well as Maury marine park are all human powered camping.... cascade marine trail
There used to several kayak-in camp spots. Try Puget sound kayak clubs. Cascade Design the outdoor company might have that sort of info as well.
Maury Island Marine park offers kayak camping. I would check with the folks at Vashon watersports in Burton.
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