I've never used a headcollar so can't comment. Isn't yours the husky x? I would also avoid using a harness for obvious reason
With my dogs I have always used a good quality half check (which tightens but does not close completely) and some treats or a ball to reward for staying close to you.
You can do a number of things, including stopping dead or walking backwards/going back on yourself if the dog pulls - dog does not get any further forward by pulling, but does when he walks on a loose lead.
Using a long stick, crop or branch, tap on the chest if the dog passes a certain point by your side (only good for bolshy dogs, can make a nervy one a bit shy in the head)
Using a long lead, hold short on your left (with the dog at your left knee) and the length on your right and spin the lead around in a circle in front of you. If the dog ventures too far forward, he will get a tap on the nose from the spinning lead.
(Again, only good for bolshy dogs, can make a nervy one a bit shy in the head)
All of those suggestions will make you look like a complete lunatic while out in public but they work in most cases.
It is all about teaching the dog that by your side is the best place to be and that pulling doesn't get him anywhere and will end with him being rebuked.
I would also try some focus training. Reward him when he looks at you - try and hold his attention for as long as possible.
This will make training him for ANYTHING infinitely easier.
My old agility instructor swears by them, she has 2 Great Danes so should imagine they must be good as you'd know about it if one of those pulled!!
We had a harness made by Mikki and it was a collar with 2 rope like bits coming off it that had rubber over them to stop them rubbing and they went from the collar, under the front legs and up onto the back. They then attached at the top to the lead and had a small bit on them to adjust. It worked by tightening up as the dog pulled, they don't like the pressure so they stop pulling and it instanly releases. It worked for one of ours.
As CALA once pointed out to me...they attach harnesses to huskies to drag sleds because it is the strongest part of the dog.
You will need to get it under control before he gets too much bigger as I can testify
your dog looks similar in size to mine at that age, my dog (64cms!) will now finally walk to heel after a LOT of hard work and I have definitely learned from my mistakes.
It is important that he knows YOU are in charge and YOU are exercising him, not the other way around
Luckily his Belgian side should make him quite trainable, good luck!
I've heard great things about the dogmatic, particularly with giant breeds like Danes. Not used one myself, but have been told by others that they don't ride up into the eyes like many other headcollars do.
I've had mine for about 6 years and it's brilliant, still looks like new too! Worth every penny. I used a nylon type head collar before, it just rode up into my dogs eyes and made them look really sore.
I bought one for my GWP yearling, she wore it twice then bit clean through it when I wasn't watching her! £18 down the drain!!
Have to say it did work well when I WAS watching her.