Rx: Achieving efficient string crossings on the double bass.
Dividing the bow up into three zones— tip, middle, balance point — and working through crossing strings while maintaining the feeling of the tip of the bow.
Exercise includes playing thirds across strings using the three different zones of the bow but maintaining the feeling of the upper third bow zone. Variations include doing it on three strings and all four strings. The four string variation is pretty tough in the tip zone.
Also a string crossing exercise that uses all variations of bowing.