Anyone out there have experience mounting speakers in the back of a zt240 or similar Checkmate? I'm going to be running a 75x4 amp and need a location for the rear speakers. I'm not thrilled about mounting them in the vinyl on the sides of the rear seat and the only other place that looks feasible is forward of the rear cupholders in the panel that runs up the side of the boat. That location is very low and I want the sound to be able to get out of the boat.