How much spacing do you get? It's quite easy for me to avoid a HO, not to mention when I set them up for a lead turn, so I guess you just havn't got your spacing/timing right?
Just throwing ideas out there, but maybe try lots of spacing, and working your way in by decreasing the amount of spacing each time until you find what works.
But really, if you know they're intent on HO'ing, set them up for a lead turn, and (this takes time to fine tune) judge right before they are going to fire, and add some vertical movement, and then barrel roll or whatever you want turning into them and try to gain the position behind their 3/9. One you get it down it's very easy to avoid a HO, or their shot when you set them up for a lead turn.
Good luck, don't get frustrated.
donkey