I have a pontoon boat that stays on the same body of water year-round. I am looking to install a fish locator/depth finder that will simply provide the basics (water temp/depth/structure/basic gps). Does anyone have any recommendations without breaking the bank? I would imagine the transducer gets installed to the back toon? Both of my toons have square looking box on them with holes, so I would assume this is the spot for them. Thanks for the help!