Hey Tom. I don't know about 'Loop Loc' specifically, but other manufacturers now have a tighter weave mesh cover that reduces the amount of sunlight that get's to the water. It's a great mix of the benefits of both mesh and solid covers.

As for the pavers, it's likely that a couple will get damaged by drilling through any one of them However, you can drill the edges (where 2 or more meet) fairly safely

If you want a little more from me on this, I'll gladly tell you what I know