I would like to see the option of charging it via a plug. You stated yourself did not charge good the first day due to clouds. Well there needs to be a secondary way to charge this thing if you get consecutive days of clouds. There are a few surface skimmers on the market that allow you to charge either via solar or via power cord. I have one, a second generation model and I still don't think surface skimmers are ready for prime time. Does it skim the stuff off your tiles? Of course not, you still have to run a skimmer net next to your tiles to get that stuff. 600 + bones for a replacement? I don't think so, not yet anyway!