Putting Mat · est.
Backstroke ↔ distance
Model: bsArc = k·√distance, k≈2.4 in/√ft @ stimp 10. Unvalidated
until the ladder session — every raw number stays visible below.
target
stimp
Pick a target, then start the stroke
diagnostic · per-stroke readout
no stroke yet
measured
session · bsArc vs target distance
session · predicted vs measured roll-out (est.)