Can we use boat paint for our 5 decks? We live on Lake Michigan in the U.P... 5 years ago we had the decks done by a professional using deck paint rated "very good" by 'Consumer Reports Mag.' We can't keep paying for this every 5 years or so. I thought of using boat paint. Hey, if it is durable for wooden boats why not for wood decks. Thanks for the wisdom that comes from experience.