I was working on a recirculating unit for my back yard and my 8 year old son came up with a pretty good idea..(I think)

he told me to put some of that rib rubber matting in my gold pan. At first i said WHAT.... But then i realized! He may be on to something so i decided to give it a shot. I haven't tested it yet, i just glued it in. I will let you all know how it works.