would it be cool to put the foil over the screen
aren't most screens slightly con caved into the bowl? if so that seems like alot of work trying to wrap foil around that bowl lol.
foil is also my personal choice. the whole point in the foil is since its a thin piece of aluminum it can transfer the heat to the tobacco but also strong enough to prevent the flame from scorching the tobacco. you might as well just double wrap your bowl. its what i do and i think it gives a little more strength to my foil, transfers good heat, less likely to screw up punching too. plus its cheaper and if you don't pack too tight or mess up punching your bowl i don't see y you should ever scorch your shisha.