Pond Boss Forums AERATION Systems questions A new 12" or third 9" Matala rubber membrane disc?

�.I just bought a nice 36" landscape rake from ACE Hardware, and tried two ways to make it float. The dense foam for construction broke in half on one of the toss's out onto the water. It worked GREAT for about half a dozen throws, then failed. So, I attached an inflated bicycle tire tube. Tube didn't last through the night after attaching it to try it the next day.

My question is: What is the best, most durable way to make this landscape rake FLOAT?...