I have installed my new fishfinder - A Garmin 160 and I am looking for opinions on where to place the transducer on the transom for the best results.  I have attached a few pictures which show where I had the previous x-ducer mounted (red circle).  I never got good results from it on plane, but it was a cheap unit, so I don't know if the x-ducer placement had much to do with it.  Any opinions / recomendations are appreciated.
 
