Andy Treweek is a long-time yak angler from Napa, in Northern California. He fishes the coast for rockies and lings mostly

The Lowrance Scupper Transducer mount did not fit well in the transducer well of my new T-15. I wanted to use my Mark 4 with GPS, so I began to modify. I started by modifying the Scupper mount. I figured I would start with the cheapest part, right?   

I cut off the mounting bracket and filed it flat:

 Then I used scissors and cut the hard rubber disc to fit flat on the transducer:

Then the scary part. I cut the mounting arm off the transducer and filed back as far as I felt comfortable. I found a sharp blade did the best job job shaping the hard plastic:

I gooped the hard bracket and disc to the transducer and let it set level overnight:

The transducer now sits fully within the well:

Rest of the install went by the book. I like the look of the Hobie thru-hull:

 I used rivets and a bit of goop for the mounting bracket:

 And the finder folds down flat to allow the shield to close with FF in place: