I recommend adding a few more lengths of rope and rows of knots to keep the pot stable and centered. For a hanger 3 feet long, start with 10-12
6 foot lengths and tie the knots every 3-4 inches until the pot fits securely. You may need to adjust the starting lengths, depending on the knots and rope you use.
Although the natural fiber ropes look good, they don't weather well. (Voice of experience!) A poly cord hanger won't drop your pot in the middle of a stormy night.