Hint 4 - Is your dog fearful of meeting other dogs even when you know that they are friendly.
Answer to Hint 4 - The trick is not to encourage your dog to meet at all, just the opposite. You need to meet the other dog, and very very importantly don't at any stage even glance at your dog. So pat and pat and pat the strange dog thinking only of it. The chances are very high that your dog will come up behind you looking for support. Continue to pat and ignore your own dog. Your dog might carefully go up to the other dog's nose and sniff, but more inclined to go to the back of the other dog to sniff it's back end glands.
A great lesson for all, as long as you never look at your own dog.