I'm considering my closing options this winter. The previous years I've done the tarp/waterbag combo but it's pretty ugly and with the rain water and my neighbor's shedding tree leaves, i have a pond on top of the pool every year. Don't want a safety cover. Too expensive. So I got to thinking about other options.
Anchors on the apron then a few ropes on a grid tied to the anchors. tarp on top of the ropes, tied with either clips or ball bungees to the anchors. Doesn't need to be absolutely tight, but tight enough to support the dogs should they be wondering on top of it. I was also thinking about 3-4 air pillows between the tarp and the ropes to keep rain water from pooling.
I'm sure I'm not the first to come up with this but wanted to run this by the experts before i dove into it.