Iowa sold 24 percent more fishing licenses in 2020, boosting state revenue and reversing what had been a downward trend in the pastime over the last decade.Fishing enthusiasts say they hope increased interest in fishing during the COVID-19 pandemic will continue as Iowans discover — or rediscover — how casting a line and waiting for fish to bite can be good for mental health.“It’s very relaxing,” said Gary Smart, 66, of Marion, who is a member of the Cedar Rapids Bassmasters.