I have a 2015 Lund 1775 Crossover with a 150 Mercury Outboard. The fish finder is a Humminbird 788CI HD. I never ever experienced a rooster tail with my boat until this year. Been out 5 times. First 2 outings this year no rooster tail at high speed, 3rd outing rooster tail showed up. Rooster tail is on the side where the transducer is mounted and shoots up alongside the Merc Outboard. Checked the bracket for the transducer and found a small crack in the plastic gears that change the angle so replaced with a new bracket. Still rooster tail at high speed. Have heard others talking on a few of the forums that this is a common problem. One remedy was to wrap electrical tape around the opening beween the bracket and the actual transducer to avoid water getting in there.
Just wondering if anyone else has experienced this problem? What I don't understand this is year 5 for me owning the boat (since new) and this rooster tail problem just showed up this year.
Thanks in advance for any tips.
I had the exact same thing happen to me. There’s a rubber plug that fits between the ducer and bracket .You must of lost yours. They pop out some times. Don’t use tape. Call Humminbird. They will send you a new one at no cost. What I did was put a zippy strap around the plug so it’ll never pop out again.
Thanks for the info. I did call Humminbird and they say there is a block that goes in between the transducer and mount bracket. I never ever had that from when the boat was delivered that I can remember. They said you have to buy the whole mounting kit to get that rubber block. They did not offer to send it to me and the kits are on back order. When You go to Amazon and look at the mounting kits they do not show any kind of rubber plug/block. I guess I will try the electrical tape and see if it goes away.
Google Mikes Reel Repair and under the Humminbird Transducer part you can find some plugs for various transducers. You can see if there is one that will fit. The store is out of BC so canadian dollars/canadian shipping.
I had the same bird and it never came with a plug. Hummingbird sent one free and it worked fine. This was back in the day when customer service was a thing.
Dodger.
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I was out yesterday. Tried the electrical tape and it really helped get rid of the rooster tail. Just a very small one now at top speed. Next time will try a little more tape where the bracket attaches.
Transducer rooster tail
Linear Mode
