I learned to Fly Fish Alaska with a 12 ga. short barreled Remington 870 over my left shoulder muzzle down. Yes, I dipped the muzzle into the water a few times while bending over to retrieve a fish. I always carried a small can of WD 40 for that event. ...... The reason I switched to the 870 from a S&W M 29 was the day that I was about knee deep in a stream Fly casting into a riffle just above me when I heard a low cough behind me. I turned and found a young female Grizzly sitting on the bank about 10 yds. from me. She didn't care for me turning and watching her so she quietly left. I knew full well that while I was standing out that deep in water my only option I had if she became too interested in me would be to shoot. AND, I knew instantly that the M 29 was not enough gun. .....