Did you prune these plants at all...clone from them? Or did they just grow, straight with one main cola?

I prefer the one cola method, but them have more plants in close together. Trim lower branches that aren't going to produce well, focus energy on main cola, put plants in closer together.

or

Prune/ take cuttings to make the plant produce more main branches to produce more (larger sized) cola's.

or

I've not done it, but others do LST...to increase yield from plant on confined space.

or

Wait longer to switch to flowering.