hello, i have an aluminum 16' lung fishing boat, i want to have 2 fish/depth finders, i have an Eagle Cuda 18 and a Hummingbird 200DX, if i have the sensors both on the rear of the boat, will they interfere with eachother, if so, can i use on on the trolling motor up front and the other in the rear, please tell me what i can do to use them both, we ussually fish with couple people and would like to stop asking eachother the depth,, thanks in advance