The Supermarine Walrus and similar aircraft seem to have had a pretty noticeable effect on naval gunnery by spotting the fall of shot from off-axis. This is modelled in Victory at Sea, but explicitly removed in the advanced aircraft rules in Order of Battle. Would it be possible to know the reason for this? It seems that aircraft on board non-carrier ships are basically useless now, unless you're looking for submarines or using the long-range search rules in Hunting the Beast. Or am I missing something?