IM a chef and i work with artic char and salmon all the time...grilling works good, but it tends to fall apart. If you grill it, i cook it on the skin side first, flip it over, scrape the skin off and do the other side, then flip it back over and do the side that had the skin on it. Make sure you spray it with some cooking spray
But i suggest poach it or make some salmon patties out of it, kinda like crab cakes...i can get ya a recipe if you want.
People are a big fan of the grills, but i feel for some fish, you just end up making a wreck of your nice filet. If you do grill, use a peice of foil on top of it to keep the moisture in and it helps to almost steam it
Hope that helps.....never heard of itailian dressing for salmon, but if its good, let me know!
Cameron