Recommendation for Dock

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The deck boards on our dock are 2 x 6 treated pine. It has been stained many times. In years past it was stained with a oil based stain but now the last time we stained it we had to switch over to a quality water based stain. I probably will need 10 gallons. We stain about every 3 years just to protect the boards.

Any recommendations for a stain to use? The color is light grey. Looking for protection not necessarily perfection.