I just bought a Garmin and I don’t want to run the transducer down the shaft of my trolling motor. My plan is to attach  a piece of metal close to my trolling motor cut a hole in it, get a 11/2 in. pipe long enough to go deep in the water and attach my transducer to it.  The pipe will come up enough so I can lock it in place for transport and put a handle on it so I can control it. 

I am curious, why dont you want to attach it to the trolling motor.

While your method will probably work, if you fish shallow water, it will just be a matter of time before it gets broken.

I have a minn Kota Ilya and if I hit the anchor button the trolling motor is always trying to position it self.  I think the reason it does that, I’m not sure, but I don’t have it oriented with the gps.  If I could get that  corrected I think the transducer would work on the trolling motor. 

Your transducer has nothing to do with the motors anchor positioning. The motor has its own GPS built in that it uses for spot lock.

If you are talking about the GPS puck. It has nothing to do with the motor holding position. All the puck does is orient the front of the boat for the spotlock jog function, on your remote. 

If your motor is overworking, while trying to hold position, there should be a boat scale calibration setting for your motor. 

The motor comes calibrated to  a particular boat weight, depending on motor size. Boat scale calibration  allows you to adjusts the motor for your particular boat.

 

This is assuming you have an ultrex. I have never heard of the llya

1 hour ago, madjack549 said:

I just bought a Garmin and I don’t want to run the transducer down the shaft of my trolling motor. My plan is to attach  a piece of metal close to my trolling motor cut a hole in it, get a 11/2 in. pipe long enough to go deep in the water and attach my transducer to it.  The pipe will come up enough so I can lock it in place for transport and put a handle on it so I can control it. 

I don't think that's a good idea, trolling motors tend to take a beating. I know mine does. That's why shafts are flexible.

That should work .