rail guides

Recently I found myself in the possession of a LOC 163 kit as a practice rocket for tip-to-tip fiberglassing, and I started thinking about where/how I would attach the rail buttons as it is intended to be a minimum diameter kit. I got to thinking, maybe I could put two rail buttons about 3"...

Does anyone have experience flying Apogee's recommended plans for rail guide buttons made from 1/4-20 pan head machine screw and assorted hardware fasteners? Interesting idea, not sure how well it works in person. https://www.apogeerockets.com/education/downloads/Newsletter334.pdf

On the surface, this seems like a silly question. Eliminating rail buttons, launch lugs, or similar protrusions from the airframe of a rocket shortly after launch would seem to eliminate a source of drag, and thus improve performance. But I'm curious if this has been tested in the real world...

Just for fun I posted a time lapse video of the machining operations (CNC and other) it takes to make the 10 series Airfoil Rail Guides. Its on Instagram, look for my account "SC_Precision". Just thought it could be interesting.