I currently have a HB Matrix 37 and HB 565 which both came with my boat a 04 Nitro NX750 when I bought it used. Is it possible for both units to be off the same Transducer? I can see one at the back of the boat on the transum but that is the only one I can find. I am looking at maybe upgrading both units and am wondering if this is the best way to have them hooked up. Also can anyone point out any HB finders for under $1000 each. I fish mostly small ponds and lakes around my area but would like to have a better display then what I have now. Thanks for any suggestions in advance.