I was thinking the other day about fish finders, and thought up a fish finder that i'm not sure exists and i'm hoping somebody can tell me if there is a such thing? I was wondering if there is a fish finder or like a transducer that hooks into a laptop computer, so your laptop is actually the display unit connected to a transducer through USB. Maybe even GPS too??? I dont know if there is something like that or not but if so I am very interested.