I also have the permeable mesh cover and try to keep the water level just below the cover, about mid skimmer level with some foam stuffed in the skimmer opening.

Keeping the water level up will allow the cover to sag onto the surface of the water (or ice in this case) in times of heavy snow and ice.

I have several bent springs I replaced before I learned a higher water level is a supporting surface and helps prevent wear and tear on the cover.

Hope this helps, Tony