Best way I've found for ripping plywood sheets accurately

I’ve tried various techniques for ripping plywood sheets over the years including ripping on a radial arm saw, ripping with a metal guide clamped to the sheet, and others. But, I finally found what works the most accurately: using the factory edge of another sheet of plywood as a guide for my circular saw. This wasn’t my idea. I got it off the internet sometime back. But, I was so excited about finally getting consistent cuts that I had to share this. As the picture shows, I was able to rip four sheets exactly 11 15/16” using this method. In the past I’d have variances of up to 3/16”. Also note the method for measuring shown in the photo: this is critical to getting consistent strips. I’ve also included a photo showing an easy way for one person to unload the plywood for cutting.