Greg,
I think you answered my question I belive it was probably surface clutter caused by wind and waves ( probably had 15 to 20 mph winds that day and water was choppy all day. The first time I took it out water was flat calm and I didn't have hardly any surface clutter. As for the mount I dont have any pics right now but it is mounted on a 2000 ranger 520, I mounted it on the very bottom next to the drain plug and it seems to work pretty well except on plane I lose 2d sonar @ 45mph but I can live with that. Thanks for the advise.