Gorgeous Barley
To help with the chewing part, here's a quote from someone I borrowed the info from :
Chewing is a normal canine activity and a very enjoyable one at that!
So, lets look at a scenario in the way the dog would see this problem.
"Everyone in the family is watching a favourite television programme, that is apart from the dog, whom is rather bored and fancies some attention. He walks up to everyone in turn in the hope for some petting, but gets told to go away. He eventually settles down and starts chewing on one of his toys, then decides to take the toy to the owner in the hope they will have a game with him. The owner on the other hand is very intent on watching the programme and puts the toy out of the dogs reach and ignores him. The dog wanders over to a pair of dad's shoes that he has failed to put away, he sniffs them and sure enough they smell strongly of his owner, he settles down to see what they taste like, but after a few seconds the house erupts and everyone is now paying full attention to the dog, dad even leaps out of his seat to chase the dog and retrieve his shoe!"
The dog has just learned one lesson, if you want some attention don't chew your toys, you are ignored for this, but do chew the shoes you get a 100% attention for that! It is a simple matter of re-training the dog.
Go out and buy some chew toys, this may cost a bit, but it is less expensive than replacing shoes etc! A Kong is an ideal chew toy and can be stuffed with some tasty treat to make it more enjoyable. If the dog shows an interest in the toy, praise him immediately, do not walk by and ignore him, even stop and have a short game with the toy, chances are it will chew on that the next time.
Make sure you put away things you would rather your dog didn't chew so he cannot keep making mistakes, but if he does chew something you would rather he didn't, bring the dog away preferably using a House Line and give the command as you do so of "leave it", now direct the dog to a suitable chew toy and praise/play with him for chewing it.
The aim is to teach the dog that chewing is fine; its only the dog's choice of chewing article that is in question.
I hope this helps, and if you want a pointer to a brilliant dog forum, let me know!
But we did have to keep him on the leash in some of the fields, as we thought he could easily be mistaken for a fox 
