Just received the unit in and the ease of installation was impressive. Had everything going in about 30 min. Display looks great for being the cheaper end of Humminbirds 500 series finders.
First I bought the Hummingbird 170 and took it back.Did not read fish very well.Bought the 561 and went back out on the Mississippi and try it on deep water and shollow water.No problems with finding fish and structures on bottom.So far so good!