A probe defining a transmission line for use with a measurement instrument includes a pulse circuit connected to the probe for generating pulses on the transmission line and receiving reflected pulses on the transmission line. The apparatus further determines a sub-area, for which the determined amount of measurement results exceeds a reference value. The method also includes obtaining optical data related to the received portion of the light signal; and analyzing the optical data to determine a property of the multi-mode fiber. The initiatives are categorized so that like initiatives are assessed against each other. A mapping processor electrically is coupled to the filter circuit and configured to receive and process the filtered electrical signals. A bow handle is attached to the bow frame at a position offset from the geometric center, such that a user can fire an arrow through the window, through the geometric center of the bow.