And this is where ebiking excels: It's just a problem solver. If you'd have stuck with this, something enjoyable and bonding for both, you could totally make an e-scooter that could add assistance as the dog gets older. That assistance could be controlled by how much the dog was pulling or by throttle.
That's true and I'd probably have gone the electric scooter route at some point. However, I was going to move from scooter-joring to bikejoring and get myself a mountain bike for the purpose of continuing bikejor. It was then that I considered assisting the dog, and ended up buying my first ebike..
I run a bikejor club and advise others on this sport / pastime now. When I retire, I'll train people's dogs to do it, as an extension of being a dog walker for high energy dogs (huskies and hounds) that are destructive in the home, if not sufficiently exercised. On my ejoring travels I get lots of enquiries thus.
The funny thing is that my sheepdog (shepherd) is an exceptional free-runner. So, although he can run and pull attached to a bike or scooter adequately, it's just as much fun with him free running. Less risky too I reckon.
It's quite a boast. Judging from the other free running trail dogs I've seen, and I've seen a lot, I'd go as far as saying he's probably one of the best in the world.
But, how long does a good thing last? Long enough to enjoy it while it's here I suppose.
I've overtaken gobsmacked looking cyclists, on my scooter, whilst being towed by this dog at speeds up to 27 mph. Believe me when I say that it's a bit 'exhilarating'.