This Is what they sent me on my Set up ???
Doh
Thank you for contacting Humminbird. We appreciate your interest in our products.
We do not offer a rooster tail bracket for the 1100 series.
If you are having problems with rooster tail on the 1198, this would indicate that the transducer is too low and would need to be slightly adjust up.


If we can assist you further on this subject or any other Humminbird related questions please feel free email us again or contact our
Customer Resource Center at 1-800-633-1468 to speak with a Customer Service Representative. Our hours are Monday thru Friday 8:00 a.m. to 4:30 p.m. and Wednesday 8:30 a.m. to 4:30 p.m.

Good Boating and Fishing!