I have used the invisigrip and found it to be what I was looking for. I don't like the dots because sometimes I need to "scootch" the fabric a tiny bit before I cut it, and the dots hold TOO well. The invisigrip helped me keep the ruler in place, but had enough slide that I could correct any minor errors before cutting. I did find that you still have to put some pressure on the ruler and try to anchor with your other hand, just like if you didn't have the grip. It just helps - doesn't make it so you can let go.