I am now more frequently using the Isolate/Hide objects capability in Autodesk Civil 3D 2005 (it can also be found in Autodesk Land Desktop 2005). This allows you to Isolate objects or Hide objects independent of their layers.
One way to use these commands is to:
1. Select the object(s) you wish to Hide or Isolate.
2. Right-click, and click Isolate Objects > then choose either "Hide Selected Objects" or "Isolate Selected Objects".
To end the Hide or Isolation:
1. Right-click, and click Isolate Objects > "End Object Isolation"
A small light bulb in the drawing window status bar (lower right hand corner) indicates whether any object(s) are currently Isolated or Hidden.
Yellow means NO object(s) are Isolated/Hidden.
Red means object(s) ARE Isolated/Hidden.
Right-click on the light bulb also gives you these options.