>>> I was wondering if a product like this would allow you to have a quick rotational swing by keeping your hands closer to the body. Just wondering if anyone has used the power drive brace and if it would help someone who has a slower swing. <<<
The product and its concept are basically the same as "Gordie Gillespie's Power Hitting Vest
." Both are designed to promote the extension of a boxed lead-arm (90 degrees to straight) to accelerate the knob. However, as the post below and accompanying video shows, this lead-arm action is not found in high level swing mechanics.
Role of the lead-arm