When someone hits a ball into my group, because we are being held up by those in front of us, I just pick up the their ball, with out saying a word back at them. When I get to the course marshal, I give him/her the ball(s) with an expalnation. That usually does the trick. One time I collected 4 balls hit at us, and when we putted out on the green, I place all the collected balls in the cup for the group behind us to find when they got there. Confusion is sometimes good for idiots....GJS