I bought an old lowrance flasher on ebay and I am gonna have to figure out what to do with the transducer and how to use it. From what I get so far , I need to mount the transducer on a stick/pole of some kind so it can be put down into the water. For those who do that , how far down into the water do they typically have to be to work right and how then do you secure the stick so it stays put ??? And do you then fish from a seperate hole in the ice or the same one ? Also, does anybody know if its possible to find a puck style transducer for the older flashers like the LFP-250 that I got ? My guess is that most transducers are not interchangeable but I would like to figure out if I can make a floating puck transducer for it.