Re: Transducer location
You may want to try mounting it inside the boat instead of on the transom. I have found that not very many transducers will still read properly at any speed over displacement speed. <br /><br /> I have placed my transducer inside the bilge on my last two boats and I will NEVER drill another hole in my transom again. It worked well in my Bayliner and now it works great in my ProLine.<br /><br /> If you can run the 'ducer into the bilge, lay it down there and lay something heavy on it to hold it in place. If there is water in the bilge, it should read ok, even at planing speed. Place it dead center in the bilge. <br /><br /> I just epoxied the Skimmer 'ducer that came with my Lowrance in my bilge and I can see the catfish hanging a couple inches off the bottom in 50' of water. And I can see that at 40 mph running down the river. That is pretty good. <br /><br /> Try it that way first before you start drilling more holes. <br /><br />They make a true thru-hull 'ducer that is designed to shoot thru a fiberglass hull that is even more sensitive. Or, top-of-the-line is a thru-hull where you actually cut a hole in the bottom of your boat and glass it back in, but those are really expensive. Vexilar makes one now that will shoot through an aluminum hull and gives you a great signal return. That's less than $90. <br /><br /> Try the inside approach. Just stay away from chines or strakes. Also, you have to have solid fiberglass- no coring or laminating. <br /><br />UFM82
<br /><br />As I know to stay away from ribs and such, where in your hull did you place this? Forward, aft? I have a progressive Deep V hull that is angled pretty aggresively at the bow and tappers toward aft.