In a way, stacking is a part of the game.
I explain, even if you use special rules for start positions, once the board is ON, if you know well your athletes, you can create stacking (classic example of a FB making the hole with the HB pushing it in the back).
But forbidden stacking at game positionning make interesting strategic challenge, in my opinion, and works great with the special rule for holes I explained.
In france, we're beginners...but we like to make our own rules soup too
