Cloud is useful in identifying support and resistance. So if you are above it, it will act as support. Crossovers are also a vital part of the cloud. There's a free book on Amazon that breaks it down even further.
The second bounce off a intermediate high was off the bottom of the cloud! so it worked. I have noticed that aspect of it.
Here's the book on amazon. How to Make Money Trading the Ichimoku System: Guide to Candlestick Cloud Charts....Not free but worth the 9.99 cost to understand the cloud.
pulsescan72 on Youtube calls it 'the Kumo cloud of death' because you can't trust any action inside the cloud and when it first breaks out of it.