I was disappointed with the performance of the granny square scrubber. It was too flimsy. I made this circle type several years ago as Christmas gifts and prefer them. To get the stiffer scrubber I used a smaller hook (J 10-6.00MM).
Sl St that together into a circle.
DC 9 around the circle.
Sl St that to the Ch 3.
DC 2 or 3 in each around the circle - that is when I ran our of tulle but you get the idea.
CH - chain stitch
Sl St - slip stitch