If by hard rock hard Canadian maple board you mean the durability of the board, then I can help you. Most of the skateboards today are made of 7-ply Canadian maple, so you don't have to worry about that. What you do have to worry about is the durability of the maple. Some decks may say 7-ply Canadian maple, but they will break really easily by grinding or just landing on the wrong part of the board. I've skated a lot of decks in my 6 years of skating. I've skated Zero, Pop-Lite, creature, Enjoy and more. But the deck that lasted the longest was an enjoy board. it took me over 4 months of grinding and flip tricks to chip it. So I would definitly go with any enjoy deck.