In reply to SouthernSteve:
Thanks for taking the time for such a comprehensive and informed reply.
We've tried to follow the 5 minute per month rule but it just doesn’t seem enough for her so have been taking her out and off the lead for short bursts two or three times a day with a fair bit of play in between. Our dog trainer and vet seem happy with this but lots of conflicting stuff on the internet. Obviously, we’d hate to cause her any issues later on.
We don’t do stick throwing but as to chewing I’d previously just looked on it as another thing to distract her from dismantling shoes, furniture, the house (we’ve been very lucky so far). She has a box full of toys, puppy wood, antlers and since her adult teeth have come through we’ve started her on marrow bones, all of which she’s able to dismantle with startling rapidity... but no more sticks for her.