Gazebo fixing down. - Page 2

I had a similar problem for my gazebo on 2nd floor solarium. I used 4 concrete white plastic umbrella bases and liberally glued them to the floor with mastic. I then anchored each side or corner to the wall with eyelets and rope. Never budged. Been up for 3 years. I use scissor clamps from the chinos to hold the canvas in place, the very large ones. The only time I take the ceiling canvas off is if they forecast heavy rain because of the sand . It has survived the viscous winds.