These are people stating the positive effects Bertholy has had on their swing of choice. Any swing method can be improved upon by "fortifying" it with Bertholy programs.
Myself - I couldn't break 100 consistently when I started and could barely drive the ball 200 yards. I found out the hard way last week that on some shortish 320 yard holes ( in the right conditions ) I can no longer hit driver as I drove it over the green into the lateral hazard behind it. Peter has stated that he improved lots with IMA, but things became even better for him after Bertholy. We have among our posters one who used IMA along with Bertholy and became a PGA certified pro. Another was a NG certified instructor for a while and is now a successful teaching pro who strongly recommends Bertholy and his genius. Now we have Allen, and Art who are reporting much improvement in their ball striking....BUT ONLY AFTER DOING THE PROGRAMS.
Sorry me bucko, these aren't the empty promises of "longer straighter in 60 days or your money back"...these are real people reporting real results form doing the drills.
Of course there are others here who quit before the work was done...but they get the same 1/2 finished results with whatever is their current swing method of choice. Bertholy can work with any method...but only if you work it. Not perfect, but a heckuva improvement from a few years ago: