If you’re going to leave the skin on, which you should, I’d highly advise you to remove the scales before you cook the fish. If you’ve never had salmon skin correctly cooked, you’re missing out – it’s like a fish cracker in the best way you can imagine.
Here’s another one I like to use a lot.
http://www.foodnetwork.com/recipes/alton-brown/broiled-salmon-with-abs-spice-pomade-recipe/index.html
I make that spice mix into a thick paste then slather it on heavy before it goes on the grill. I use a mortar and pestle to bring everything together but if you don’t have one, a clean coffee grinder works to grind the spices too. If you use a grill instead of a broiler, I start with skin side up to set the spice crust first then finish skin side down get it nice and crispy. Good luck and enjoy!