Well I gotta admit that I don't have the stomach to fish places like Peg Leg or the Scale Bar. I'd also say that it doesn't take much power of observation to see that given the increased use of boats and fishing directly from them, there is a great deal of fishing activity other than those 2 places. There are also other bars that attract large number of anglers. You just don't go there.
Estimates, the creel survey data certainly are but at least they are based on some verifiable data and observation.The 0.5% convenient guess that was offered is anything but an estimate or verifiable. The Spius creek data in fact suggest in river angling can take a much higher % of fish than the creel survey data indicates.
Restricting the entire consideration to in river angling is unrealistic and self -serving as well. Ultimately conservation demands consideration of all means of exploitation as DFO does. In river anglers always face that conundrum; last in line and for the most part lowest generator of economic value.