It's time to replace my solar blanket, so I've been doing some searches to price them out. I came across some hexagonal discs that you put out, but they are either discontinued or on backorder, as they are listed as not available. I like the idea of isolated items that would be easy to place. I found some discs that are pretty similar. These had mixed reviews. I then came across some black discs about 4' in diameter. The material is only listed as Coast Guard approved UV insulation. It seemed like a good system but was pricey at $40 each. I would need 35-ish. I did a couple of searches and found closed cell foam insulation like you would use for a backpacking mattress. I doubt that this is the exact material, but I bet it's close. I am very tempted to buy sheets of the closed cell foam, cutting it into shapes and giving it a try. It's more expensive than a blanket, but the thought of being able to place and retrieve them easier along with easier storage is very attractive.
Does anyone have any experience using disc type products in lieu of a solar blanket? Am I nuts for thinking what I described above might work?
Here's a link to the foam: http://www.foamorder.com/closedcell.html
Here's a link to the hexagon stuff that's no longer available: http://www.inyopools.com/Reviews/NS7912-6