Is It Okay To Punch Holes In Roof Sheets?

I'm laying roof sheets and I find my tek screws slide and slither everywhere so I punch a hole or an indentation for a starter.

I've done this before and it seemed to work okay - the roof is still up and working well after many years.

But googling around I find suggestions from people who should know that I shouldn't do this.

Like here: Steeline - Technical Information

Any experienced people can pronounce on this?

Or maybe tell me why I can't just drill straight through with my tek screw? Offer some technique that'll enable me to do that?

ab :)


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