Juggernaut sounds like you have your fish ID feature turned on. Shut that off as its only purpose is to catch fishermen. The only time any of my units have shown fish as arches is when I'm in very shallow water or the fish are shallow under the boat. It's a scale thing. A fish down 70ft in 100ft of water is going to be projected on your screen at a scale proporional to what you have set on your unit. It's only going to show up as a dot or two depending on how big it is. Bait fish schools show up as clouds.