Thanks, but as outlined in my previous post, I did try to shoot from a hull down position... and failed.
Scenario was Last Defense, my Hellcat was just behind the last houses past the bridge (from the US viewpoint), trying to shoot up at the Tiger near the edge of the map, at the end of the forest road to the right of my position.
Lowest camera view for the Hellcat showed clear LOS with the Tiger's profile in full view. Yet the Target command refused to target the Tiger, claiming that I had no LOS. And I didn't -- on ground level which was what Target used. I did have clear LOS at main gun level, though.
So was this a bug? Should or shouldn't it have happened? Any other comments?