You are the second person i have heard talk about the noise issue one thing you can do is to trim the length of the discharge tube so that is under water surface when it kicks on this will cause less water to bounce off decoy making less noise and for another look you can insert 3/8 fertlizer tube about 4 inchs long into dicharge it will stay in with friction this will give spray effect can be seen a long way on sunny days hope this helps cw