Personally I hate HO shots with a passion. With the exception of the shot at 304 or so you rolled out of a HO more often than not, and you didn't fire on every pass. Granted both of you were basically pulling your noses around for a head on pass but your the one holding your fire.
In the first of the three passes you dove under him, he fired going for the top of your cockpit, second pass you dove under his right wing, he fired, third you dove under him again and he didn't fire. Then he ran to reset and when he turned back you started a slow climb looking to get back on top of him.
The next 4 passes you had 4 crossing type shots but could only get the lead for 2 of them. He then got a good turn on you and you rolled out and got skinny on the next pass as he was coming in firing. The next pass is the one I'd call a HO, but again after 8 or more passes at each other it seemed to be the main move to pull your noses around as close to a HO as you can get. This time YOU fired and he didn't and you tagged him good.
You both made for the head on passes, and after dodging as much lead as he was throwing in all the previous passes I most likely would have taken that shot as well. It looked like it was the only kind of shot he wanted so I would have given it to him.