A note on the 3-6 comment "there's not much strategy to this". I think there is, but I agree it requires alot of luck as well.
I dropped frenzy on the very top, not next to it. First I dropped my revive druid and PD on the left side of the circle. A few secs after I dropped cupid on the left and the other 3 on the right. This gave me the nessecary split to allow me to conquer 50%. I drop druid first because this allows for a VERY late GA. Usually with this split, PD gets to the heroes first and you really need this to build up the nessecary speed.
This is a picture of how it looks when you have no Santa/SM to clear distant buildings: