I stained my new western red cedar fence with Ready Seal stain and sealer in the Natural / Light Oak color.
I used a roller, pump sprayer, and brush to apply it.
I was able to stain ~700sq feet (115'x6') with 5 gal by being very deliberate in my application.
Check out my experience and lessons learned for how to best apply Ready Seal.

Ready Seal Amazon link: https://amzn.to/3P6Bn1a
Great option for sprayer: https://amzn.to/3PUVP5r
Exterior fence screws: https://amzn.to/4577E17