throw something at the nearest yak . i agree with changing ping speed or frequency . one possibility is wake or turbulent waters . possibly from your prop wash , like when running at high speeds . you can more than likely eliminate this from the equation if floating on a plastic vessel .
. i am still in the middle of watching this video from dr. sonar , so i could be wrong . it's like using a local guide to try and advance your learning curve . pm me if any locals want to check it out . Big Sammy .
