There are a lot more sportsmen than gillnets, however, gillnets do kill many times more fish than sportsmen. You have to figure that even on a good day, sportsmen are still more likely to get skunked than catch a steelhead. A single gillnet will kill more steelhead than every sportsmen on a river combined, and that's assuming that every sportsman kills every fish they catch. To give you an example, I was on the Frasier River last fall salmon fishing, the day was slow and no one was catching anything (there were about 30 people on the same bar) some Indians ran over in a boat, dropped one guy off on the bank and drug a sein net right where we were trying to fish. They pulled the net in, and on the first pull, caught 40 fish. We just left at that point, but that single net, caught more fish than our entire group did in 3 days fishing. Go figure, eh?