Hehe thats interesting. I'm not so keen on yellows but I like Yin Zhen a lot, which I consider quite similar.
I do the opposite: Instead of the recommended 70-80°C, i often use more than 90° because I find that the tea is handling these temperatures quite well and develops a more defined character. Mostly i do it in a kind of gong fu-light style, in a relatively small kyusu with more leaves, and start by 80°, then raising the temperatures during subsequent infusions more and more... this works really well for me.
The other method of using a lot of tea and quite cold water is very interesting, i'll try that the next time i get YZ!