Since there's a quest log/journal, presumably Ronan is writing in one relatively often in canon.

So imagine, during a short rest, Lae'zel happens upon him scribbling rather furiously in his journal. She asks him what he's writing about at this moment so intensively, remarking that it generally seems like a waste of time. Looking over his shoulder, she sees he's drawing something and he hands her the leather-bound journal to show her fully, stating he's been thinking about new 'battle maneuvers' in order to solve the issue of covering distance in a fight.

Whats been drawn are crude stick figures with notable features tacked on to them in order to denote personage. The first instance is of what's presumably the dragbonborn (a figure with a tail, four horns, and a triangular head) hoisting what's probably Lae'zel (a figure with a frown and many sharp teeth, jagged pointy ears, and a very big sword) into the air and throwing her into what's probably a bunch of goblins. There is a little blurb under this in very neat and tight script about how this may be difficult due to the weight of Lae'zel's armor, followed by another drawing of the same kind of thing, but this time with Ronan presumably throwing Astarion (a figure with curly hair and shorter pointy ears, with a much smaller dagger) into a fight, with the annotation that he is lighter and more throwable(?).

Even with his difficult to read expressions, Ronan seems rather eager for her opinion, prattling on about how he once worked with a gnome in his soldier-for-hire days and they had done this exact premise 'a few times'. Lae'zel sneers, pointing out that everyone in their group is bigger than a gnome and she's stronger than Ronan, something she could and would easily prove-

As she's ranting about their capabilities, Lae'zel absentmindedly flips to the previous page in the journal before Ronan can stop her. There, under the entry of the previous night in camp is another, smaller simple drawing, this time of just the dragonborn and the Astarion figure standing next to each other. They're quite close, the little sticks for arms touching at the ends, and what this represents is lost on Lae'zel as the journal is unceremoniously ripped from her hands.

"That part...is not battle maneuvers." He mumbles, half-turned away and holding the journal close to his chest.

Lae'zel tsks, tells him to keep work-shopping them and also do not, under any circumstances, try to throw her. Ronan begrudgingly agrees.