I'm not saying my way is right, I'm not saying it's wrong, I'm just saying it's how I do it.
I write very small, and I alternate up/down as I move from the left to right in the two boxes. When I flew freight, that was 6-8 landings a night, all in one entry.
Just make sure you understand what you're doing. It's your logbook, the only right way is the way you want to look at it.
