My old jet ski manual suggested pumping the ski up and down a few times in deeper water before starting to avoid picking up sand. I've heard of collecting sand in lower units from prop washing the sand. Our natural sandy beach stays clean on its own but silt collects behind the breakwater. If you dredge (permit required) the contractor will set up fences to prevent the silt from leaving the area and harming the fish. DES frowns on blowing debris and silt out into the lake.
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