We've been asked 3 times now. Each time it was definately a weird experience. The last couple was out at the Dock on the lake and they were definately more insistant than the other two. The first two couples, although we different times, were just easy to get it through their heads that we said no and that was it. The couple at the lake said that they won't stop trying. It's tiring and wearing on a person to keep your guard up all the time, especially when they get drinking, they get more bold.....
First it was flattering, then it got annoying and we started to avoid certain situations with them, which was pretty difficult because their boat is right beside ours on the dock.