Hi Harry,

The method you are using now is how I raised My male gos, Denis all those years ago. I always took the food to him. He did scream at the start, but once he had a few kills under his belt, the noise was reduced to now and again. But once he was well into the season, there was no noise at all, his focus was on the quarry and not me. He was flown at a higher weight, which allowed him too much freedom, though he had the ability and power to hunt partridges through out the season.
When into his second/third season I was able to raise his condition further, without any loss of control. In fact he got better.
Good luck with you little chap.