I also noted that a speed of 4+ is really helpful on this. For example I manage do these 10 in a row with Gilmour but struggle to get a few in a row with Bradley (who has great shot stats but is slow).
So I've made some progress and here are my tips for others like me:
Here's a scenario where you have a leftie player, so you should start from the left side and head diagonally towards the right side:
Make sure you move diagonally towards the opponent goal as shown in the videos. Right around in the middle axis of the field, around 3 meters from the goal, start to steeply turn to the left. Here it's important that you press directly left, not diagonally, but straight left on your controller. Your player's momentum still moves you where you were skating originally (diagonally right) - with the goalie following - but your stick and the puck will eventually point to the left. Now, the crucial thing is to shoot the puck exactly when your stick and the puck get to point straight to the left. This is where the angle is perfect and the goalie is not blocking the puck because you were leading him to the right all along and suddenly the puck is on your left and you're shooting it left.
This is just how I got it to work and how I think of it, but obviously there are many variations which might be more difficult and use more subtle movement and angles.
Any corrections and additions by the experts would be welcome. Thank you.