I am dead against the gill plate maneuver. Lot's of guys do that here in the Midwest. As soon as the fish starts to squirm, they put the death clamp on the gills. Plenty of fish with bleeding gills get put back in the water. We prefer to use a net, and keep the fish in the water. Most of our river banks have boulders,rocks, so the luxury of having gravel is not always there. I have gotten to the point of where I slide the fish in to som shallow water, and cut the line as close to the hook as possible. Jerking on a short length of line to bust them off is hard on the fish. Avoid the gill move at all costs. They just die as they wash in to the lakes. The seagulls love the "gill maneuver".