Thank you for sharing your experience! Each gallon of Rust-Oleum Restore 10X Advanced Deck and Concrete Resurfacer has a recommended coverage of 40 square feet with the recommended 2 coats. The application method and surface of the deck can affect the coverage. You are right, this is a thick paint and that is why we recommend using the Rust-Oleum Restore Honeycomb Roller, We are happy to hear that you are satisfied with the product otherwise!
http://www.homedepot.com/p/Rust-Oleum-Restore-4-in-Roller-Kit-4-piece-20118/203194605