One more to pile on. I have nothing against sprays or pastes, but there's no need to be cryptic. If I were down under, I would recommend offering bribes (if that's what it took) to get some time w/ Onimaru55.. Seriously, the face to face time will teach you more in a very short time than most any other method. I've not forgetten what the seller said when I bought a fancy rock - Onimaru was the best he's seen w/ a razor and stone.
Sometimes they have regional meet-ups. You might want to consider going to the next one for the same reason.