Hey FA, what about the section from Portullo to the Pitt mouth or are you trying to keep that area to yourself?
Just kidding. I use the term "Lower Fraser" when I am referring to the Tidal Fraser. It's a huge piece of water to fish, and there really isn't a particular "best" spot for them because:
1. It's tidal, water moves up and down, fish are being moved around all the time, they don't congregate at one spot.
2. Bull trout are highly migratory, they go where the food goes. There are many times when I sit for hours without a bite, then there would be 30 minutes of feeding frenzy.
Check the article archives on the website and look under fishing locations as most of the spots are found in the "Lower Fraser" and can be excellent for bull trout.
Some notes:
The time span between 2 hours before and after peak tide is best.
Catch and release only.
Use large hooks when barfishing, ie. 1/0, 2/0, they have a big mouth. A fellow who landed a fish 8 years ago, and I could easily put my fist in its mouth.
For lures, both spoons and spinners would work. I tend to stick with 1/8 to 1/4oz ones. Experiment with colours, big factor especially when clarity of the water is always changing.
Good luck!