I also agree this is the right way to use them. In cases where I didn't do this, I always ended up with some strange bit of the stack that I didn't use and didn

I also agree this is the right way to use them. In cases where I didn't do this, I always ended up with some strange bit of the stack that I didn't use and didn't understand how it worked, and it caused some problems later. But copying and pasting relevant working bits into a new repo is a good learning exercise and also gets you going quickly.