Hermies are a product of nature....hermies are a product of poor breeding and fems. So if you have good stable genetics. They wont herm at all.
Poor breeding doesnt help cull the trait, fems have nothing to do with it.
As far as the OP, I dont like big colas. I do my best to make a lot of smaller buds and avoid having big giant buds. Big, dense buds are too susceptible to budrot.