Re: holes in that are punched close to the rim are bad ?
heat will travel in a vircular pattern, if you put the coals in the middle it will heat everything around it creating more heat. You get less heat from the edges, this is simple physics.
Your less likely to burn your tobacco from the edges. I sometimes move my coal to the middle on a standard egyptian as they begin to die down, but this is pointless on a vortex or phunnel
Hookah Pro Legitimate hookah without the bias.