I mean normal RCM, and not autoRCM.
If I don't turn off the console, probably there is no need to use autoRCM either ways, only if the Switch freezes for some reason, however that shouldn't happen too often (I expect).
By the way, if I follow this guide closely ->
https://thewikihow.com/video_3-UeB_enPrM
How safe is that? It looks simple, just use the 1mm tinfoil on joycon pin 9-10, bend it in half, use a tape so it stays in place.
However I heard some people had trouble with this, as the tinfoil tered off and stayed in the Switch, etc. Basically, if I would like to use it only once can I expect some problems even from that? Should I get a jig instead?