Deck board recommendations for freshwater dock

Does anybody have suggestions to replace treated wooden deck boards on a dock over freshwater? I looked into composites, etc. and am thinking PVC is the way to go but am not sure if that is the best choice or not.

The goal is to get something that will last as long as possible. I'm okay doing maintenance on it so that's not a factor.

Just wondering if anyone else has experience or advice. I'd prefer to use something that doesn't have an unprotected exposed side that can rot or get messed up.

As always, thanks in advance.