Name:   wix - Subject:   Offset umbrellas Date:   3/22/2017 3:10:37 PM

What I have done for years that works for us is....I bolted a 3' long 2" galv pipe to the deck via a flange.  Then I just put the umbrella into the pipe and raise it when needed.  I do not recommend leaving an umbrella open here because wind from a thunderstorm will destroy it or blow it away.