Re: Funnel Bowl w/o Mod
if you use heavy duty foil  and stretch it tight the foil wont ever sag down, even if the coals get too close to the center. i have never had a problem with the foil touching.
if you have that problem just twist a piece of foil into an inch long piece, and fold it to a "v" and bend the legs at the top so it looks like _/\_ (upside down, the only way i could figure it out lol)  and drop the pointy part into the middle hole. you can even bend up the very tips of the flat parts sticking out of the hole so that it will hold the foil up higher.
as for saving shisha.. dont buy such a huge bowl to begin with lol