One suggestion: Remind him that when he (or anyone for that matter) is doing a 'Pan Shot' you have to keep it 'sloooooooow.' With 'normal vision,' you also have 'peripheral vision' in play; with a camera lens .. no such luck.
A fast 'pan' doesn't allow the eyes to (for a lack of a better word) 'anticipate' what the main focus is going to see. Not trying to sound like I'm critiquing (it's Jolly Good bit of film!!:
), but you asked for suggestions. Learning 'slow panning' takes a bit of practice, but it's easy to master.
A fast 'pan,' ever done? Usually, if a Director want to inject a feeling of caious (sp?
), into a film. Excellent examples of this show up in the movie "Saving Private Ryan." Early on (Normandy) and the last (Village Battle) he does this with great effect.
Now tell him to get back on the river and 'practice, practice, practice.'
Oh, a drop of oil in his reel may be necessary ....