cookie sheet

I use large rectangular baking pans (cookie sheets?) to prep meat for my cooks. For ten years I've had these cheap, thin metal pans that warp with heating and cooling (sometimes it sounds like someone just shot atcha when your cookies are cooling on the counter) and now the edges are starting to...

So last time I smoked a shoulder on my kettle I had some issues with hot spots. When picking up new drip-pans I saw these disposable cookie sheets and thought they might work as a heat shield. Now I am questioning myself - Will these melt? Is this even a good idea? It's a bit hard to see in...