I've got a propane heater out of my deck that I use on cold days to enjoy a fine stogie and a port. It loses a lot of heat straight up. I'd like to redirect that heat back to me. (But safety first, I know.) I've been thinking of a simple curved sheet of aluminum suspended above it, but I'm wondering what exactly I'd be redirecting. By the time it's over the heater it's merely warmed air. Can I reflect the IR? To do that, I imagine my panel would need to be reflective, and positioned differently than directly overhead. It would have to intersect the direct rays from the emitter itself. (One of the reasons I want to arrange this is because the heater is actually too intense. To get enough heat, I have to sit so close that my knees burn while the rest of me freezes. In essence, I want to diffuse the heat over a larger radiating area.) What might be an expedient way of using this lost heat?