A method of determining the launch angle of a putter by evaluating the roll performance of a golf ball after being struck by a golf putter during the execution a putting stroke. The speaker is selected from a group of speakers having variation in mechanical vibration resonant frequency. A first end of the release member is attached to the valve housing, the release member loops around the distal ring, and a second end of the release member is movable relative to the proximal ring to release the distal ring from the retracting configuration. An indwelling catheter extends from the distal end of the introducer and enters the fenestration or side arm and through to the nose cone dilator, the indwelling catheter has a guide wire extending through it.