The boat I bought has 2 Helix 9s, one on the steering console (si) & one up front (di). When running both units i get long verticle lines on the sonar but if i cut one unit off the other clears. It dosent seem to be the trolling motor causing it. Any ideas how to solve this problem?


"When you've stared down the barrel of a shotgun in your own home, 3rd & 20 don't seem too bad"......Ken "Snake" Stabler