It is not fancy, but filled a need for the Ryobis. An electrical conduit connection box, cut out port on side opposite cover, plugged the end holes, put in some alum U chan with partially open ends and holes for deflection, drilled holes for mounting bolts. Installed a single alum tube ( part of a second hand crutch ) in one of the outlets of the box.

The boxes come in various sizes and configerations.

A pic at yahoo :
http://photos.yahoo.com/bc/bnbnlapaz...iew=t&.hires=t