Weaver, why don't you use the idiot approach and make your proper WiFi password so long and complicated that nobody could possibly remember it, let alone give it out from memory to anyone. Then make your guest network password much shorter and simpler, so that it could be remembered easily? Since, you don't have many neighbours to worry about, WiFi security may not be that much of a problem. If your router is like my Netgear one that restricts guests to external internet access only, the security would be even better?
