You have an interesting idea. But I believe it still needs more work in the oven. Currently it's pretty straight forward. Just hit the next magnet. This means the amounts of shots are the same for each time. I wasn't able to skip any magnets really. And I believe this goes against the "golf dream".
I can imagine that you idea would work better if you had some magnets in the area that had a bigger influence and could not be picked up. This way the player would need to use the magnet to their advantage.