Surfing the trend vs Scuba Diving to find good companies that are cheap

I came up with this analogy after my holiday at a beach resort.

If charting (technical analysis) is similar to surfing and riding the waves, then value investing is similar to scuba diving. You dive deep in the water and look long and hard for corals/ fishes. Once you discover them, it's amazing!

Having no margin of safety is like snorkeling, there's a limit to what you can find in the water and big waves does not help at all.