M_Boats: M15 Bridle

In getting ready to rig my new/old M15 I noticed that the bridle is considerable shorter than those I see on various pictures of M15's. Is there a specified length or is it @ the discretion of the Skipper? I was looking at the Montgomery Owners Newsletter of 1998 Fall Issue an article by Mike Truemen M15 of San Ramon, CA George NoNameYet #602