Split Jerks today!
The key with these is to have confidence in your footwork. Once foot positions become automatic, you can really start to focus on speed under the bar and getting more weight over hear. Check out the short video below to help you determine where your feet should start and finish.
A big thing that we sometimes forget is the width between our feet. Even though we are dropping into that split lunge position, we still need to have width for a good base. Just like the clean or snatch, feet will start at hip width (or jumping position) and finish at shoulder width (or landing position), and in this case we just also happen to be in a lunge.