It's not easy to change from gill netting to more selective methods. Tangle nets were a flop. When you start looking at seining or fishwheels they have to go from a one or two man relatively inexpensive operation to larger more expensive operation. They couldn't replace all the gill net permits with seine permits because of over capacity for the fishery. If they went to fish wheels the same problem exists on a larger scale. So the question becomes how do you get, say 50 gill net permits combined into 10 seine permits or one fish wheel permit? It would kinda be like converting a bunch of capitalists into communists .