The Lowrance Elite Series includes several versions of the lower cost Elite-4 as well as the more expensive and feature rich Elite-5. We have found that the plastic mount included with the units leaves a bit to be desired. Fortunately there are some nice new alternatives constructed of metal. The mounting adapter will take the place of the plastic part (called QRB-5 by Lowrance). They will fit the slot vacated by the QRB-5 and come coupled with various mounting systems at a very competitive cost. They are manufactured by our pals at RAM and come with a lifetime warranty. You will want to use the 1″ ball versions for the lighter Elite-4 and the 1.5″ ball for the Elite-5.
As usual we offer some pictures of your options.