“Voldemort will not have cared about the weight, but about the amount of magical power that crossed his lake. I rather think an enchantment will have been placed upon this boat so that only one wizard at a time will be able to…”
And sure enough, a moment later there was a knock on the back door. Mrs. Weasley jumped up and hurried to it; with one hand on the doorknob and her face pressed up against the wood she called softly, “Arthur, is that you?”
Immediately a thick coppery green chain appeared out of thin air, extending from the depths of the water into Dumbledore’s clenched hand. Dumbledore tapped the chain, which began to slide through his fist like a snake, coiling…
“And what about Percy?” asked Harry; the third-eldest Weasley brother had fallen out of favor with the rest of the family. “Is he talking to your mum and dad again?”