Nope, I have a bowlsaver, so I can utilize it.
I used the Kel McNaughton system which is really excellent, but sold it along with a load of other tools when I thought I was moving to Schweiz.
Now I just have a system like this: <iframe width="560" height="315" src="https://www.youtube.com/embed/PQROtnJlVcQ" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>