What tools or workflows help you find one moment in a long recording?

I record a lot of lectures and meetings now, and the recording itself is the easy part. Weeks later, finding the one moment where something was explained is where it falls apart. Scrubbing through an hour of audio never works for me, and a wall of transcript text isn't much better.

I've tried a few things: naming every file by course and topic, writing a timestamp note while recording, searching the transcript for a keyword. Each helps a bit.

Which tools or workflows have actually worked for you? Do you re-listen, skim a summary, or ask questions and jump straight to the answer? I'd love recommendations from other people who deal with long recordings.