Stick with it and the fish will come. Watch what others are doing around you and try and see if you can see there gear. Spy on them with binoculars if you can. If you notice if a certain boat is catching fish, watch when they drop there gear. Take notice of how far behind the boat they are running the bait. Time how long it takes them to drop and then try it on your downrigger. Is it close to where you're marking fish?
Try and attend a Salmon University seminar.
Go to their web site and go to regions. Down load the info on the area you are fishing, print it out and take it with you fishing so you can refer to it.
This is just a few ideas for you and there are a million more. Just keep picking peoples' brain.
You bought the boat, they will come.