For those of you not familiar, there are many fantastic resources on the web to help you get the most out of your CoC experience. One of my favorites is the Clash of Clans Builder by Neggs. Link is available on the CoC Resources page. (thx goes to Apple Moffe, of HolgerDK mini, who introduced me to this resource)
The web-based tool allows you to layout your base and design to your heart's content. It has overlay toggles for defense coverage and perimeter. The community is active and you can discuss base design with other enthusiasts. They also have excellent base examples and submissions that you can easily copy an modify to obtain your perfect base. I encourage everyone to try it and strengthen your base designs. Or submit one of your original designs and let the experts in the community give you feedback. Happy building!