Your thread is South Island Rivers
and you've identified three of them that I addressed in my post. The regulations are an integral part of fishing. You may know them all, but not everyone does.
By the way, while you no doubt know this too, others may not know that there is generally a hook size
limitation for the Sooke estuary. In the past they've posted that information in a few spots around the estuary and last year the COs were checking hook sizes. (And below the bridge is tidal, not freshwater.)
The San Juan may be open for ''angling,'' but it isn't open for salmon retention as far as I can tell: Vancouver Island Rivers
. It's farther than I like to drive for a day trip from Victoria when it's open for coho anyway, but I always like to check the regulations wherever I fish -- they have a nasty habit of changing from time to time.
Whether the Cowichan opens for general angling depends on the water level, which is still low, and the water level will also have a major impact on whether they specifically open it for salmon later this year.
Right now I'm not catching any freshwater salmon down here on southern Vancouver Island, because I'm not doing any river fishing.