Question from a guy who, despite playing hockey all through my youth, has only begun following hockey closely again in the last year and a half. Do fans generally agree with how often coaches switch around their lines? I am playing fantasy hockey and see coaches constantly moving players between the first, second and PP lines. The line does well and all of a sudden the coach wants to spread out his talent, or the line doesn't do well and then someone needs a demotion. A player gets called up out of nowhere from the 3rd line and kills it on the top line, then out of nowhere is sent back away. You here them say they want to see if players have chemistry but then abandon it after one mediocre game. Is this something most fans find dumb? Are most hockey coaches dumb?