Lost boardwalk tiles

Everyone can do it. All you have to do is build the boardwalk piece and don't click on it when it's completed. Just leave it floating and when people come to your town, they click on it. After it gets to a point, you click on all the handshakes until all but 1 remain. This gives you however more boardwalk sections that you have the handshake symbol on it AND it gives your friends more XP. I don't know what the limit is for the amount of handshakes on it, but just as long as you don't clear out all the handshakes, you keep building boardwalk sections. It works for everyone!