Keep the lead wrist cupped with a strong grip
The coach recounts that cupping and twisting his lead wrist lengthened his previously restricted swing and produced easier distance. He feels both wrists retain their cup while the trail arm straightens, and says the gear effect can leave the lead wrist flat before it rotates over.
Channel: stayhandsy
Watch official source at 43:47Why this context matters
This is the coach's personal strong-grip wrist pattern, not a universal wrist position.