Sarm Bok Mar Alternatives
When practicing your Sarm Bok Mar drills, instead of using Biu Mar / Punches, try using front kicks as the attack instead, with Gum Sau as your defence.
This is a far more realistic use of the footwork anyway, as moving out of range of the kick is rarely a bad thing.
Each time reposition yourself before executing the next through kick.
Remember this is using your stepping as a drill, in reality of course you would react straight away by attacking the kick leg.
Here’s an example of some students trying this idea in a class.