and does this translation method work for visual novel too?
So far... it seems that works. Right now i'm playing this short novel:
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and everything works! Sadly, since it's google translate that we are talking about, don't expect too much from it. Also, at least for me, i'm playing by using "Locale Emulator" (the first option that you can choose. The second is applocale and the third without nothing, when prompted after launching Chiitrans) because using Chiitrans and AppLocale gives problems of some sort that i don't understand.
Also, it's somewhat difficult to choose the exact line that the program need for translating the text, it's not simple like in this one, like the instructions mentioned in the OP.
Putting aside this, if you want to play with a translator of some sort, in here there are several methods:
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Beside the first method (unless you know Hiragana and Katakana), you can use the other two: "Visual Novel Reader" way or "Translation Aggregator" way (but with this last one, you need tons of "utilities" shit for make it work). Good luck xD