Re: Multiple small port holes for bd instead of one that's bigger?
Try a Drum Workshop bass drum resonate head, They have many tiny holes set around the perimeter of the head.
I port some of my bass drum heads but not all of them. It depends on the tuning and the music that I am playing.
When I do port, I am a fan of a single porthole that is 4" or smaller depending on the size of the drum and the tuning.
I also have learned how to not bury the beater when I don't want to.
Rubber Duck Power Drives Me.