A tool that takes selected edges and connects them, they can be closed loop or not. version 2.5.  
Install:Unzip all in to in Plugins folder
Then startup Sketchup, click on view (menu) and then click on toolbars - Make sure that Skin has a check next to it.
The tool bar should appear at the top/ you can also use skin though the tools menu.
Have fun

For more info and latest releases of this script please go here http://www.sketchucation.com/forums/scf/viewtopic.php?f=180&t=1306&st=0&sk=t&sd=a
