I would think unless you cover the entire bottom of the kettle, it wouldn't be much more useful than a bazooka screen or similar. Then you'd have a flat surface for stuff to collect on if you do a whirlpool. I prefer leaf hops when I can get them and I would love to have a false bottom in my kettle for that purpose. The bazooka screen I have doesn't always cut it. I often find myself pushing mounds of hops away from the screen to get every last drop out. I always put pellets in bags when I use them. I don't think there is a single solution out there that doesn't clog from pellet hop mess.