I started a project yesterday to make window flower boxes for the wife. The instructions I had required alot of rip cuts on plywood sheets and 1x4,1x6 stock. I don't have a table saw, so I figured I would take it all into work and get our maintenance guy to rip the wood for me. As I was looking at a pocket hole jig though, my eyes fell on a fancy circular saw rip guide.
I thought $30 was worth the chance, so I got it. It was pretty easy to attach to the saw, and set up for accurate cuts. It could make accurate cuts from a little over 2 feet all the way down to 1/16th inch.
I swear, this thing made the whole job dummy proof. All of my cuts came out darn near perfect.
I can't remember the name of the guide off-hand, but it was at Lowes. I'll add the name of the thing tonight if my internet is working.
Long story short, a good circular saw rip guide is a safe and effective replacement for a table saw.