Here is an easy inexpensive way to make your ukulele instantly sound much louder and richer. Simply put a violin shoulder rest on the back of your uke. Position it son that you can play normally, but the shoulder rest prevents your belly from dampening the vibration of the back. It takes a little trial and error and experimenting to get the right fit and get used to it, but the results are the equivalent to buying a very expensive custom instrument. The rest shown here is a half-size on a concert uke.