How should I prepare to propagate my new grapevine clippings?

I remember the 3 buds, 1 above the earth rule, but should I first soak / dip / moisten them? Perhaps now in the warmer March days (with still a last bit of chill left and some more coming) I don’t need to cover them with a cut bottle.. Or should I
Also I’m seeking both the mainstream techniques and any other secret trick for instance the ancient Greeks would apply, say, to enhance toughening of the vine for next year’s clipping and so on..