April and May are 2 of the best months locally for Salmon-Halibut locally were fished out many decades ago and Ling Cod will be closed.
Salmon returning to the Fraser like to hunt Herring between 60-160 feet deep on a place called The Hump off Bowen Island-a 20 minute run and still within sight of the city-they congregate there April through May and by June have booted up the Fraser to spawn/die.
2 of the best local Charters are Bonnie Lee
Saltwater Salmon Fishing Charters Vancouver BC Canada, Bonnie Lee Fishing Charters
and
Bites-on Salmon Charters, Vancouver BC - Guide Fishing Vancouver
The fly in the ointment in terms of getting out is the wind-April is one of the windiest months and anywhere Salmon are found is quite exposed, the good news is that both the charters as mentioned leave from downtown locations just a short taxi ride from your hotel.