BISMARCK, N. D. (AP) — Ah, the serenity of fishing. Just an angler, a fishing pole and maybe thousands of dollars worth of sonar equipment offering an exact image of what that walleye or bass is doing in the watery depths below. It's called forward-facing sonar, and the hot-selling products are not only helping anglers increase their catch, they are raising questions about why people go fishing in the first place and whether fish populations can survive the new technology. “You’ve got to...