I'd suggest you throw them out and buy 2 or 4 real panels. With 25 panels there's just no way to avoid a rat's nest of wiring and splices and other issues. Put 'em all on eBay for ten bucks a piece. And those tiny 10w panels you have? Inevitably are not rated for marine or simple exterior use, I'd bet half of them are water damaged already.
Sorry, but...that's packratitis, not a charging system. They were never intended to be used that way.