In Legend of the Five Rings (2nd edition), for bojitsu (and I believe someone was looking for naginata as well) we looked for the specific trait that would tell us what dice to keep, however in none of the descriptions nor tables is there a specific trait mentioned; it says variable, all others however are specified.
Where can I find these kind of specifications?
Edit: From the Player's Guide, pg93:
Bujitsu (varies): The weapons skills of the l5r rpg cover weapons with simiolar size and weight distribution. we have collected the entirety of them for clarification. For game purposes, if a character has one of the skills, he is assumed to have the same rank while using all weapons listed with it. For exaple a samurai with a Kenjutsu 2 rolls 2 dice when he uses a katana, a wakizashi, or a no-dachi.
It then lists each specialty with the corresponding weapons, and it ends with a note on ninjutsu.
From the same page:
Athletics (varies): ... If a character is running, for instance, and wants to test his speed, he uses athletics/reflexes. However, if he wants to test his endurance, he would roll athletics/stamina.