could probably steer away from visual heuristics like trichome color. its going to be multiple things happening at once. clears forming, clears going milky, and milky going amber. they are not like a clean step 1, step 2, and step 3 once you think of any set of trichomes larger than a single trichome. you girls finishing stacking out would be a much cleaner indicator than trichomes. there is also the sample selection problem of where in the canopy the sample was picked from and where on the flower morphology that plant mass originated from as well when doing trichomes.
just push until she is ready to come down. heuristics are heuristics for a reason. we use heuristics when we are rushed, when we are in a bind, when we have incomplete information, and so on. not sure if it is needed here