In the 18 years that Peter Levy of Lynbrook, N.Y.,has been a sole practitioner, hehas never once gone away for morethan 10 days at a time. And that’s morethan a lot of solos.

Sole practitioners like Levy say thatthe unpredictable nature of practicinglaw, combined with the demands ofclients and the prospect of missing out onnew business make it impractical to takeoff a block of time at once.