Increasing distance can have a lot to do with quality of strike- the angle of descent or ascent (with the driver)- spin rate etc.
The most important creation to help gain distance is swing speed- the faster the club can move the more ball speed will be created and hence the farther the shot can go- if struck well.
In this video I show one of my junior students a way to help him hit the ball farther as he prepares for the Drive Chip Putt event