Those are some nice Frosty looking buds you have there. I haven't had a good Jeweler's loupe in a long time plus my eyes are bad I'm going to get a prescription here in the next week or so for the first time in four years. Anyway, the way I do it these days I just look for the calyxes to swell up real fat almost like they got seeds in them and by then the hairs are real short and mostly brown. It seems like some strains just stop taking water when their done.