It's now late August. I have 2 supers full of comb and filling fast with nectar - frames are getting quite heavy. Also have a deep and medium hive body pretty full too. Should I continue to apply the 70% rule of adding another super where the super underneath it is 70% full of drawn comb or let them finish up for the season. I am in South Carolina, so we have a nice September still ahead. I don't want the season to end prematurely when there is opporunity to at least draw another super into comb - also don't want a late season swarm or any back filling.