I used to fish a trout lake near Wakefield and the owners allowed me to take a boat over the net into a small, overgrown neck end. It was like the mangroves, all submerged trees and overhanging branches. The water was crystal clear and I used to stalk perch using flies. The little ones up to 8oz were dead easy, but the 2lb fish were very, very wary. I tied some bloodworm flies that could be cast in front of a fish and just allowed to sink naturally. Any unnatural movement saw the perch melt away under cover.
That was the best perching experience I've ever had.