So my 'New to Me' Doral 270 SC has a single DIN head unit below with a wired round remote in the dash. There are a pair of speakers below and another pair outside. Lets leave the speakers out of this discussion for now. I would like multiple zone control which I have discovered certain brands claim to have - but it is really just different sound levels for each area - in my mind a glorified balance. Has anyone just simply installed two separate radios - one above and one below - so some one can hear totally different stuff in either place? It seems it would be relatively easy. Power, antenna and speakers are already wired to the head unit below. There is already room for a round head unit above (where the remote is located) and I can get power from the dash and it is easy enough to run an antenna and get speaker wire there from the speaker locations that exist. Am I crazy since it is not a big boat?