@Esme866 , I think I'm a bit of a wuss regarding snaps. I just haven't been able to get my head round installing them at all, until I first bought Kam Snaps a few years ago - they were a revelation, and I used them a lot.
When I found the Prym tool, I was delighted because it made installing metal snaps really easy - and it isn't too hard on the wrists either.
I did buy the metal 'hammer' kit, but I just find it too complicated for my brain cell. I've watched YouTube videos, read tutorials, experimented, but I've never been happy with the results.
Jessie