I'm curious, what kind of layout do you use? In particular, do you sometimes leave some part of the screen not not covered by some tile? (If so, why?) It seems

I'm curious, what kind of layout do you use? In particular, do you sometimes leave some part of the screen not not covered by some tile? (If so, why?) It seems to me that you always look for a grid, no? Also, how many tiles do you end up having on average on the same window? I'm curious because to me any value higher than 3 doesn't seem practical, I'd rather switch to another window. Finally, do you save your layouts? It seems like a lot of work if you have a very precise layout and it's discarded when you shut down.