i havent Q'd with cedar planks but have grilled lots
salmon steaks, EVOO, fresh dill, lemons sliced , S&P
soak planks couple of hours, preheat grill medium/high, lay salmon on plank, fresh dill, then lemon on top of salmon, drizzle with EVOO, sprinkle with S&P
i grill mine for a minimum of 20 minutes, i like my salmon well done, sometimes the plank chars a little around the edges, adds to the flavor