My 2017 catcher had, for a catcher, well above average speed. But virtually zero training in how to run a 60 in terms of "form 101". So he downloaded a few YouTube videos, watched, and practiced a few times for a few days and ran a 6.95 at his preferred D3 camp. And that was with no formal instruction and, frankly, not much work. I suspect with full refining of his technique via coaching and moderate practice, he could have gotten down to 6.8 or so. Any improvements after that would have taken oodles of time and effort and as a catcher, he put the time in catching techniques, arm conditioning, and hitting.
At the end of the day, you can see who has excellent/optimized 60 dash technique vs. those who just "fly."