Steve made a guest appearance on LingoCast to talk about language and LingQ. Listen here: LingoCast: Steve Kaufmann: Language Acquisition and LingQ #51 on Apple Podcasts
Interesting talk. I felt that Steve dodged a bit around the question about deliberate practice. Luca Lampariello has his own methods like bidirectional translation, sound analysis and so on that are quite technical.
Other polyglots swear on shadowing, transcribing or writing diary entries. I think the question went more in this direction.
Personally I’m more like Steve focussing just on reading and listening with regular speaking practice, but I wouldn’t dismiss the possible effectiveness of some of these more deliberate practice methods.