when out walking him pick him up and put him over a fence that you feel he can jump and walk off and leave him he may cry for abit but he will jump it thats how i taught mine and they are jumping well now. once your dog has jumped it once he will jump obsticlles all the time
Aye am the same mate, just leave them at the other side of a fence that you think they should be able to jump and start walking away, they'll prob scream the place down but eventully thy will jump it, keep coaxin them over by calling their name, also if it's a wire fence try putting your jacket over the fence incase