actually the best place is near lake hylia you'll see several waterfalls go up to the very top and you'll see a mountain. wait there for him to appear he comes swooping down from that mountain and flies down the waterfall. jump off as his flying down the waterfall and stay in front of his face than get your bow out because your in the air time will slow down. you can get at least 20 shots off at him easily while falling shooting his face and body to get any drop you like and those lightning balls won't touch you.