Yes, but remember an installer is based toward using as few positions as he can to save time. I think 8 can be fine, and I have had that work quite well for a single chair listening setup. I would never use less than that. But, the larger the intended listening area, the more you should use. Of course, going ape and using a whole lot of positions is going to be very time consuming with diminishing returns as to sonic improvements. There is a happy medium.
I have settled on 11 positions over the circumference of my 3 seat listening sofa plus 3 more center weighted ones over the center cushion, and I am pretty happy with that.