The dots only work for a short while in my experience. I use a swipe of rubber cement on the backs of all my rulers and plastic templates, let dry overnight and then you can cut till your heart is content without slippage. Good Luck!
They make small cutting boards on a small turntable so you can spin as you cut and won't have to keep walking around the cutting table to get the best cutting angle.
Hex rulers can be used for lots of quilts but probably the most popular is the Grandmothers Flower Garden and other similar settings.