Probably a question that is stupid, but since I'm not the electronics guru of this household..... Cable TV at the slip is horribly expensive. I'm already a satellite TV customer at home, why can't another 'dish' be added to my boat, or on my dock storage box, so that I can receive decent TV. I realize while moving, thats not going to work, it would need to constantly track its satellite, but is just the bobbing of a boat enough to totally screw up reception?? I certainly am not ready for the 3OOO + TRACK TV