Nail the baseboards or use these mounting clips?

My dad is totally into hot glue guns. However, I haven't tried it yet. So far, I have screwed the clips in.

If anyone is wondering why there are hyphens in the word, it’s because the word was always changed by the forum software after posting.

Certainly, but then I would definitely glue

Because that would be invisible or what?
Which glue would you recommend for that?

There are special things.
Take a look at mapei Supercrip. Definitely something decent, not the cheapest.

I attached our molding with the hot glue gun, it holds well but can also be easily removed if desired. Aside from that, the screed settles only in homeopathic doses, otherwise you wouldn’t be able to lay tiles.