Question on flushing and using Budswell?

I use Budswell during the 8 wk flower. My kid/grow pardner/brain tells me of a long time grow buddy of his uses Budswell in the final flush for flavor.

We grow in Foxfarm Ocean Forest, use House and Garden Soil A/B and the rest of the H & G line.

Does anyone have experince with this use of the product?

Thanks,