What is the best method for applying wood deck stain and sealer to ensure long-lasting protection and a beautiful finish?

The best method for applying wood deck stain and sealer for long-lasting protection and a beautiful finish is to thoroughly clean and prep the deck, apply the stain and sealer in thin, even coats using a brush or roller, and allow sufficient drying time between coats. It is important to follow the manufacturer's instructions and reapply the stain and sealer as needed to maintain the deck's appearance and protection.