Description: The Rolling Hitch Ashley Version 2 (ABOK # 1735, p 298) attaches a rope (usually smaller) to another (usually larger) when the line of pull is almost parallel. To attach a rope to a pole see Version 1 below.
Version 1: However, to secure a rope to a parallel pole, use Ashley's Version 1 (ABOK # 1734, p 298). There is no "tucked second turn". Both of the first two turns are just wound on tightly beside each other. Version 1 grips well on poles and bars but is less secure than Version 2 on rope.
Midshipman's, Taut-Line, and Rolling Hitches: A Midshipman's Hitch (ABOK # 1729, p 296) is created when a rope goes around an object and is then tied back to itself with a Rolling Hitch Version 2 - the version better for rope. This became known as a Taut-Line Hitch and was taught exactly this way in early versions of the Boy Scouts of America Handbooks. Unfortunately, a change was made and Version 1 was substituted - the version better for a pole. So now the "Taut-Line" Hitch being taught employs the less suitable version of the Rolling Hitch, the one better preferred for a pole.
Optimism: To end this confusion I live in hope that the Scouting organizations will abandon the Tautline Hitch and teach instead the better Midshipman's Hitch.