Re: Best way to poke holes in the foil?
It obviosly depends on the bowl for me but, for a vortex ill do 3 sets of rings and then fill in any where that has about a 3/4" space with no holes. for a phunnel i do 2 rings + a hole dead center in the spire. for a mod/egy ill do the spiral filling in patches where it needs more airflow.
Do a quick check by blowing through the bottom of the bowl once its all packed poked and ready to go. if the airflow you hear sounds like it should, chances are your all set