@T-fromTO, if you look at the thread about Bell Aqua #3 back from the dead, there's a video that shows the correct way to do islands! Just my opinion. ...Islands are essential to a smaller lake. In essence, they make the lake longer, plus they really reduce back wash! If you decide to do them, do what @Bruce_Butterfield said about the underlayment below your rip rap and OVER DO IT on the rip rap! You're better off doing it right the first time! I've been involved in 3 lake projects and have enjoyed every moment of them! Don't get in a rush and don't do anything half assed! You'll pay for it later! Mostly, enjoy yourself! Looking back, these will be some of the best day's of your life!