I was wandering through the garden/barbeque section of wally-world today in search of a lightweight grill , I stumbled on a product I didn't know existed. Apparently it's meant to replace aluminum foil on top of either a round (13") or rectangular small portable grill. Called a disposable grill topper, it's made by a company called Oscarware. Made of expanded aluminum mesh, I thought there might be enough heft to the product (it is flexible), that if I came up with two lightweight steel/aluminum rods to support it, it might do the trick over a small fire of briquets, and last a few times before disposal. At $1 a copy, figure it's worth a try, the downside being it might melt into our hamburgers which might ruin the flavor not to mention make them hard to chew.