I guess I have a problem to understand/pick right "chart extreme" because it depends on how far I zoom out the chart.
Your largest chart is always the chart that you are 'trading'; this could be a daily, weekly, or even monthly chart.
Now if you are always trading your largest chart & if trading is simply placing and trailing stops then the minimum requirement for placing a trade on a small chart is to hold the long term extreme, isn't it?
When you break trading down into its simplest parts then you need only take a few pieces to form an idea by which you trade.
When trading is simple you have full knowledge of the idea and you know when the idea falls apart, but when trading is complex then the answer to your problem is always yes & no.
For you trading is complex because you are searching for what is past finding out instead of trading what you see.