[Lowfer] question about drilling holes in plastic coil forms

[Andy - KU4XR]

Hello Everyone:

I have a question about something I have seen in pictures of homebrewed coils, and variometers. whether they were wound on paint buckets, or larger PVC, plastic trashcans, whatever, Some appeared to have holes drilled in the plastic. I have read on the net also that this causes the plastic to be more like an air dielectric, and maybe a little less lossy. Has anyone tried both methods, and saw any improvement with the holes versus solid plastic ?? I am about to begin making my matching network for my LOWfer beacon, and If the holes in the plastic are an advantage; out comes the drill !!  ---  Thanks for any replies:  

73, Andy - KU4XR