so im fairly new to owning my own boat, and have never dealt with garmin graphs before. i know the basics on how to read them, side imaging still confuses me a little, but i dont know anything else about my electronics. i have a echomap 74dv on the bow and a striker 7 at the console. should they be switched around? i cant read my console graph while running, much less have any maps to look at so i havent even pulled the graphs out of the box in months. will a lake master or navionics card work with the 74? it has extremely basic maps south of dallas, but doesnt have hardly any detail in them and is missing quite a few lakes. i havent had the bow graph in the boat for months because i switched trolling motors and the old transducer mount didnt fit and i cant seem to find a new mount to mount it up with. is there another mount i can look into or a particular place around dallas or out towards abilene that may have what i need? im extremely lost with them, and at the point where i kinda just wanna sell them and go with lowrance or birds because im much more familiar with them. please help me