picture is too far away to give anything more than a general method about the topic...
I used to rely heavily on trichomes, but at this point i've run into too many that just don't amber up as expected, then end up with over-ripened buds -- can tell by how it breaks up and tastes when i smoke it. Most plants i still harvest based on tirchomes, but i'd say at least 1 of each harvest (8 plants) is an oddball the last couple years.
nowadays, i have a timelimit from the point it 'seems' fully fattened. I try to err on the certain side of that assessment. If i don't see enough amber within ~7 days, i chop regardless and i have been liking the results. It's subjective, so the exact time limit one person may use could differ to ensure fully ripened results. It's not unusual for people to lie to themselves about such things if impatient, for example. Or, maybe someone waits extra long to be certain... a little trial and error can work it out, either way.
cloudy and amber are signs of degredation, not peak thc. so 'clear' isn't necessarily impotent. i'd still favor cloudy (or plastic vs glass), but i'm not a fanatic about it.
worth mentioning i prefer an early window harvest compared to most.