[cca5448]

Thanks.. I was looking for that info and figured it was only one direction.
Considering whether it makes sense to build a bot focused on breaching defenses and delivering boulders to an ally in the opponent zone, then crossing back to neutral for another boulder, rinse and repeat. While you would not necessarily score many points like this (although you could score the low tower like this), you would increase the probability of creating a full breach for 1 QP, and I think would lead to a strong probability of alliance selection if you were very good at this, rather than being a jack of all trades, master of none.