rustystud
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- Woodinville, Washington
The ducks could go in water. In fact I toke the family out on Lake Washington just last summer in the duck. Ride the duck in Seattle.The WWII Army deuce ducks aired down for sand conditions and they ran 20" rubber. I cannot recall the PSI exactly but 10-15 PSI rings a bell. They had a chart painted on the dash with the PSI for different conditions.