I was nervous about this after reading all the reviews.  I have this on my deck and I was able to mount it to deck post.  The umbrella is very easy to put up and down and move around as necessary.  I wanted it to be able to tilt and it does so fairly easily.  The only way to hold it there is by tying it to the arm, but that is easy to do.  It has been up for about a month and holding up very well.  I don't leave it up all day, just as needed.