Teach the dog to quarter starting with 2 helpers with each having a handful of bumpers. You handle the dog. Flank the throwers about 5 yards to the front and about 20 yds on each side of you. Then one of the helpers will yell "hey hey hey" and as the dog is going to the helper the helper will toss the dummy. The dog will retrieve it to you. Then the other helper will do the same. As you are doing this everyone is walking very slowly maintaining proper spacing just like you are hunting. I would start on a mowed football field or something similar. Then progress to a hay meadow. You can then replace Hey Hey Hey with a gun. Then replace the bumpers with clipped winged pigeons. Eventually eliminate the helpers and place planted birds. After 30 days you will have a quarter dog. Never let the dog go behind you. I would advise hunting the dog by himself the first couple of trips and don't go hunting with an army of hunters. That is not hunting anyway. And get a copy of this DVD for reference. Teach the dog to quarter starting with 2 helpers with each having a handful of bumpers. You handle the dog. Flank the throwers about 5 yards to the front and about 20 yds on either side of you. The one of the helpers will yell "hey hey hey" and as the dog is going to the helper the helper will toss the dummy. The dog will retrieve it to you. Then the other helper will do the same. As you are doing this everyone is walking very slowly maintaining proper spacing just like you are hunting. I would start on a mowed football field or something similar. Then progress to a hay meadow. You can then replace Hey Hey Hey with a gun. Then replace the bumpers with clipped winged pigeons. Eventually eliminate the helpers and place planted birds. After 30 days you will have a quartering dog. Never let the dog go behind you. I would advise hunting the dog by himself the first couple of trips and don't go hunting with an army of hunters. That is not hunting anyway. And get a copy of this DVD for reference.
http://www.gundogsupply.com/fowl-dogs-1-dvd.html
It is always hard to know just how to direct someone as everyone's definition of training a dog is different. So all we can do is take your word on the level your dog is at. Post a video of a basic obedience session and your dog running some short marks and we can tell you more. Take one with your phone and we can help you more. Not to be offensive but your dog would have been a puppy last duck season so I don't know how much transition he would be bringing to the upland. He is still a puppy at 1.5.