Ordered the Arlmont & Co. 4-piece Cantilever Offset Patio Umbrella Circular Base Stand to help secure and anchor down the Hawkinsville 10' Cantilever Umbrella and it works perfectly.  The umbrella was installed on the back deck, which is at least 10' off the ground and subject to gusts of wind when storms roll through.  There have been two such storms in the area since the umbrella was installed and the base stand has kept it upright and in place both times.  Great item!  I'm ordering another umbrella and this base stand for the other side of the deck, since the deck is quite large.