Ron,
I cook my salmon differently than is done in the "appetizer style" salmon on this site.
1) I cut my fish into 2" wide pieces. I try to use pieces of similar thickness.
2) I brine the pieces for 1 hour in the brine. I rinse the pieces off throughly but quickly under cold water.
3) Pat the pieces dry with a towel and place of a rack. Put fish in fridge overnight.
4) Smoke the Salmon at LOW TEMPS (140-160 degrees) for about 90 minutes.
5) Increase the temp of the cooker to 180-200 degrees. The cooker should never get over 210 degrees.
6) Once the fish reaches 150 degrees for atleast 30 minutes, it is done. If you like your salmon drier, just maintain an temp that while keeping the fish around 150 degrees.
7) I recommend that you start tasting about every hour after it hits 150 degrees until is dry enough for you.
8) For salmon, I dig alder for my wood.