Im new to the Si world and was seeking some advise. Just mounted my 598 on the front deck and used it for the first time this weekend and really didnt get the results i was expecting. We fished structures that we put in earlier this summer and they didnt show up on the screen very well if at all.I see alot of the pros talking about chart speed. I was tight lining about ten to twelve feet away from the structures with the boat not moving very much if at all.We fish mostly in six to eight feet of water.Any suggestions on chart speed settings or depth settings or for that matter any settings on my new unit that would show more clarity.