ricer, I enjoyed your well typed out explanation and partial defense of the commercial fishery.
There are a few holes in your argument you may wish to rethink though....
Overspawning - I'm well aware of certain situations where ESSR is a valid concern. Realistically one must take into account several issues here. The length of suitable spawning gravel, nutrient sources, predation etc. You mention that populations of several species fluctuate which is absolutely the case with everything. Nature does have a wonderful way of working things out though and unless a severe disease outbreak occurs, overspawning is extremely localized and rarely demonstrates challenges to the overall health of the returns.
The other one, as Robert_G already mentioned, is the extremely subsidized commercial fishery as it is today. You mentioned that 15 years ago the commercial fishermen fished 10 months a year. Up and down the coast salmon stocks have typically had a downward trend in regards to populations and spawning numbers. Do you think maybe there is some correlation between the long commercial openings and the downturn in many salmon populations? The case of Skeena coho populations and the SE Alaskan commercial fishery is an excellent example. As you stated, the commercial fishermen have had 4 days of fishing in the last 4 years at the mouth of the Fraser. I`m sorry, but from a layman`s view, that simply does not add up to a financially viable income choice.
I`m well aware that many commercial fishermen both past and present have had to find another source of income to provide for themselves and their families. I guess what I`m trying to say is, is it worth it for commercial fishermen to pay for the upkeep of their boats and equipment when the overall commercial fishing openings are becoming rarer and rarer?
I`m not trying to take a shot at your argument, you made alot of great points.
Here`s to a healthy conversation.