I have sirius and love it. I just have the basic $49.99 stratus head unit and move it from the truck to the boat takes less then 10 minutes. However I already have a stereo in the boat, So all I have to do is plug it into my cigarette 12 volt, stick the anttena on the bow and tune in to the fm frequency I have the stratus set to and presto sirius on the boat!
Cheers ME