What are the exact steps for making copies of the PDS disks?

SSM wrote that indeed PAL 50hz games played at 60hz produced no borders and the 17.5% speed increase that NTSC games enjoy.
As for PAL 50hz optimised games (examples they listed were Sega Rally and Duke Nukem 3D, PAL games without the borders on top and bottom of screen and i assume speed adjustment) just run them in regular 50 hz mode, as playing in 60hz would add borders at the side or something.

Yes, you can run PAL 50hz games using the switch. For 50hz optimised games (such as VF2) you can still flick it to 60hz and have the game running at 117.5% speed. It’s a real kick.

Wouldn’t recommend with NiGHTs though. It makes the controls less responsive.