I'm generally on the saltwater, but about 10 years ago I was a crazy keen fly fisherman. One afternoon up at Penstock Lagoon in the mountains of Tasmania, I waded out into dead still water and saw the tiny telltale ring of a fish rising, taking gnats off the water film (almost imperceptible). I managed to present my fly pretty well and the next thing we were on. It took a good ten minutes to turn him around and bring him up to my side on an extremely light leader. This was memorable. Caught quite a few others (all catch and release) but this moment was special, taught me a lot about thumpin' big trout in Tasmania.