Steven Hart has been snowmobiling since 1970, and also was involved in drag racing sleds in the late 70s. He performed all of his own maintenance tending to an average of 5 to 8 sleds running a year throughout the 80s and 90s. Steven designed and made the ISAT tool in the late 80s as a means for aligning the tracks on his own sleds.
He recently decided to make his alignment tool available to the public. The device is current patent pending.