Keep pressure on the fish with the rod. Keep a good bend in it.
DON'T yank on the hook. If you set it, keep the angle on your rod after the hookset.
REEL REEL REEL
DON'T dip the tip of your rod to pull it sideways or to you. When you drop the tip, it creates a loop in the line. A sockeye spin or a chinook roll and you are fish less. Stay above the fish in a boat or in front of the fish on the bank.
If you are fishing in a boat, trolling, a fish hits. Pick up the rod and REEL REEL REEL. Don't set the hook after the fish is on. The boat set the hook for you.
Sockeye have soft mouths ( ie :: kokanee)
Chinook like to roll. If you have a flat angle or are yanking, they WILL get off the hook.