Boat Dock Decking - PT Lumber or Composite

Just looking for advice/experiences/suggestions.
TIA
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JB said:

Recently walked a long boardwalk through a marsh.
The decking was done with composite and showed no deterioration. It was intalled with the fake wood texture side down (the other side had a slightly grooved texture) and was not slippery in the wet spots.
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Pat in Plymouth MI

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