Set scroll speed to normal, ping 12-14, surface clarity low, sensitivity +3, color line 74 to start and fine tune from there. Most importantly make sure your transducer is level and flush with the bottom of your hull. It should be at least 8 inches from your prop and in a clear area without rivets or anything to obstruct the clean water flow. The Total Scan transducer is a very good one. If you have to turn up the sensitivity that much it is probably your transducer is not level when you are running on plane. There are good videos on YouTube about leveling your transducer. Ping speed set at max won’t hurt but isn’t needed, start at 12 and work up.