Think it takes a collective approach (gear guys, fly guys, recreational users etc.) to determine the carrying capacity of the river and to not exceed that.
And how are we going to accomplish that?
In nature, the rules are clear. There is population control. Animals are allowed to use what they need to survive but their numbers are regulated by the conditions of the environment and the sources of food.
In our sophisticated society, our politicians, unable to deal with the population increase, are trying to convince us that the rules of nature do not apply to humans. They have devised other methods to "regulate" use of resources which are based on the God they cherish, Mr $.
They will teach you, pretty soon, that in order to use you need to pay. The more humans out there, the higher the fees will be. Till the point of having just a small minority enjoy the outdoors. This small minority, in fact will also happen to have the time and resources to enjoy fishing and hunting to the fullest, as they will have lots of spare time. The rest, us the peasants, will have to toil for them and will never be able to afford a fishing trip or to "buy a riverfront property" (a concept totally alien to me).
Seeing the rivers congested with fishermen is not the worst. The worst is, that the quality of our environment on the planet as a whole gets destroyed and compromised with the speed of the population increase.
You will be trying to fight residential developments at the Whiteman's Creek mouth. We will be fighting Enbridge, the tar sands, the Trans Canada, Shell and their projects for the Skeena but while we are doing so a number of similarly destructive projects will go under the radar and get shoved in our ***. And then we have "the accidents" like the gulf of Mexico, the many oil spills and finally the effects of the already changing climate.
We simply cannot keep up with all the greed that this mass expansion has generated.
"The good old times" will only come back in our dreams.