The Technasonic Check-Go is a compact, little device that spins golf balls at very high RPM's. After a period of fifteen to twenty seconds, the ball settles into a constant position as it spins within the Check-Go's cradle. At this time, the user takes a small marking pen (included with the Check-Go) and makes a dot on the top of the ball. He then inserts the pen into a side porthole and creates a thin line around the equator of the ball. This equator indicates the weight-distribution axis that will allow the ball to carry longest, strongest and straightest.
Though the company calls the Check-Go a "Sweet Spot Finder", the device does not actually locate any one sweet spot on a ball's surface. Instead, it locates a preferred alignment direction upon which the ball will best fly. The "spot" that is marked on a ball faces the player at address position. Impact is supposed to be made at the equatorial marker line. This line points down the desired path of the ball's upcoming flight. The equator may be rotated to any position along its 360-degree path.
We did not have much doubt at GCR that spin-balanced balls were effective to some degree or another. Common sense dictates that they would be. What we did doubt was whether a simple, little mechanical gadget such as this one could possibly do a reliable job of spin-balancing golf balls. It turns out that the Check-Go is, while not perfect, more than up to the task at hand. For an inexpensive device, it manages to do a very fine job. When the spinning process is applied repeatedly to the same ball, an identical equator is always found. At least the equator is identical in relationship to the casing of the device. Human hands can tilt the marking pen at slightly different angles to create equatorial marks that trace a bit off center. An off-center line can be visually annoying, but it does not actually affect performance in any way. The ball still sets up in the appropriate position.
If this isn't the product that's right for you, check these out: The Golden Rod by Planar Golf, Technasonic Check-Go Sweet Spot Finder, Long Shot Impact Recorders
