I think this is a great way to shoot, it's enjoyable for everyone for multiple reasons, you get a decent bit of exercise and get to know the land and the animals and really observe nature. What I really can't stand is the chicken farming type shoots, 600 bird days a couple of times a week are common on one shoot around here. How can anyone actually justify that? I'd love to protect shooting, fishing etc, but all the time that ridiculous setups such as those exist the whole industry is going to look bad and the decent arrangements like yours will ultimately suffer.
Its the same with fox hunting for me. It looks bad, everyone knows they aren't really following 'trails' and all the time there is a massive show of people actively going out to break the law on what they know is a controversial, divisive subject then everyone involved in reasonable country sports actually suffers.