My neighbor started working with a TPI-certified trainer and has really spoken highly about it. At the very beginning they hooked him up to all these sensors to record and measure his swing. Based on that data, they designed an exercise and strength training program tailored to his needs - lots of core work, arm tempo stuff, and isolating leg muscles to help with downswing weight shift. Played 9-holes with him last week and he was striking the ball well saying he noticed a difference. It's pricey, though - something north of $300/month.
I'd not seen anything like the website you shared - thanks for posting. Will definitely check that out as they look like some great conditioning drills. I may not be getting personal training with all the technology measurements but it also won't cost me $300 a month.