And two handed flails, but not oars or a hoe or a rock-on-a-rope or a single handed sickle. While I completely agree that many tools were utilized as weapons, it just seems odd to me that there appears to be so much emphasis on "peasant" weapons if this was an activity of the warrior classes as has been presented. Coming from a FMA background, our weapon training mostly aims at knife, short blade/club, and spear/staff. From those base training modules you can adapt the spear/staff material to a hoe or an oar. Or short blade to sickle or some applications of tonfa for lack of a better term. Obviously an specialized tool, like the sai or tonfa will have particular tricks to that particular item, but from an outsiders perspective it seems odd to focus training on the esoteric weapons, the oh-crap-I-dropped-my-sword-I-found-"this" situation rather than focusing on weapons that I would expect a warrior class to focus on; polearm, sword, shield, maybe knife.