easttex-- cooking on cedar plank is a quick grill method for cooking salmon and it's outstanding. I don't usually break out my kamodo for this since it cooks so quickly. I use my gas or little weber.
Did this last Friday and 4 adults mentioned it was the best they ever had. Used wild atlantic that was on sale at Tom Thumb.
Soak cedar planks in salted water for at least 15 minutes. I put them in the sink.
For the salmon, coat with GOOD olive oil, salt, a little pepper, I also added a dash of Old Bay. Do not trim the skin, but make sure it gets olive oil on it.
On a medium, to medium hot grill (I use gas because the planks are providing the smoke flavor) put the plank on 3-5 minutes before the fish. You'll see them start to get hot and smoky.
Put the salmon on top of the hot planks and cook 7-10 minutes to desired done-ness. I like medium rare to medium. A little pink in the middle.
Let it rest a minute or two and serve.