Mostly flat water at shark bay. Little lagoon near Denham works in all wind directions. If you want downwind bumps you’ll probably be best to head further North to Exmouth or come to Perth. Maybe with a boat in Denham or parawing you could get out into deeper water to enjoy some downwind bumps. The ocean water there has a lot of ribbon weed and seagrass. Plenty of wildlife as well. Turtles, sharks, dugongs and snapper galore. It’s a great part of the world to explore on the water.