Hi, I have a 50ft Bertram gameboat which fishes the Great Barrier reef in Australia, the boat has a Dff3d unit and Dff1-UHD running through TZT2 MFD's. I want to install a sonar for chasing black marlin and sail fish and am hoping people maybe able to give me their opinion. I was considering CH600 as other boats here are running it. Is this the way to go?