I've finally started taking a laptop computer with me when I cruise. (I don't have a tablet or smart phone and don't see getting either in the near future.) I just got home from a trip during which I tried to use my laptop while at a slip in a marina that had Wi-Fi. Although I couldn't have been far from the source (the marina wasn't that big) the signal was weak and I kept getting disconnected -- and reconnected and disconnected. Is there an inexpensive external antenna that would help? And how does one hook up the antenna and use it? I'm completely ignorant about this subject.