Pick a year. Any year. When John Wetrosky worked the counter at Koep's Nisswa Bait and Tackle from 1971 to 1978, every Minnesota fishing opener knocked him out. The joyful stampede of walleye anglers veered off Hwy. 371 toward the can't-miss shop starting at midweek. Then, at 6 a.m. Friday, the trickle would turn into a torrent as the doors opened for two days of round-the-clock sales. Hour ...