Find Walcan road - it's on the west side of the island off Hyacinth Bay road. Short hike down to rocky bluffs. Salmon have been caught off the GW at Manson's on Cortes Island as well.
I did a 4 hour trip outta April Point Lodge 3 years back - fished the Hump & had a limit of Springs for both me & the guide 15-22lb in 45 minutes fishing the "Hump" on the low slack/incoming tide. Well worth the $329.