Senior and Super Senior Long Drive Champion. He talks about width and leverage in this video and a poster asked about why he gets up on his toes when he hits it. He doesn’t come up onto his toes on this video, but he does in competition and has ever since the early 90’s when I competed against him.
I can make one comment that covers all of it. Professional Long drivers create leverage with DNA and thousands of hours of hitting balls. Bobby would hit the ball just as far if he didn’t extend so wide. He is genetically predisposed to hit the golf ball far and he works hard at it.
It is not something an average golfer can do. He goes wide to narrow, which can create power for those few who can control it, but Bobby is the exception who creates consistency with it. Therein lies where he goes up on his toes. Going wide to narrow, combined with all of the speed he creates, makes it impossible for his swing to stay in sync and he goes up on his toes to clear, because his hips can’t move fast enough to stay in sync with all that speed. When he is taking that smooth cut he is taking, they can.
There is absolutely nothing wrong with this if you are a world class long driver and are strong enough and practice hard enough to deal with it to hit 400 yard drives. It is not a good way to have distance and trajectory control on wedges.
The one thing I agree with him on 100% is you don’t want a narrow swing. You don’t want to go wide to narrower either. For maximum consistency and distance put together, you want to try and maintain the same width in the golf swing.