I say if you are going through the process you need to do it right. IMO right means long enough straight roll to be able to hear the roll, glass top, guide marks in both directions, a definite starting rail for repeatable runs, about a 3" slope over 8', built in soft stops to prevent accidental damage, tuning marks to verify roll and wheel migration . In my first 10 months I have learned that steer and migration are only part of a tune. A track is mandatory to dial in speed as well as perfecting ALL aspects of the build. I hope this helps and I hope to see huge speed increases this year on the hill. For me and you.