Using the striker 4 dual transducer in hull 2019 gti se 155

[Reedlucky]

Hi I'm trieing to mount a transducer its the bullet shape I tried in the front near the battery with silicone in the back with epoxy but both time it just reads 5 ft and no bottom but when outside of the boat held by hand hand it reads perfectly fine so does anyone know a spot on this hull I can mount it