I also have a Wilson. It works great. Mine is just a "cradle" style, and that cradle can be mounted on a car dash, somewhere in the camper, or left free to move around where you need it. So it doesn't broadcast a signal through the room; the phone has to be in the cradle to get boosted. It needs to be plugged into a usb port, and is connected to the antenna by a wire. It just has a maybe 6 inch tall, magnetic antenna. Which doesn't stick so well to
fiberglass.
But I honestly just put mine on a counter by a window, and it works fine. It won't make a signal out of nothing, but if there is a weak or moderate signal, it will help a lot. It probably gives me 2-3 more bars than I'd have without it.