Other theories are that some tekiya traveled around as toseinin (yakuza-like gamblers) who, unlike yakuza, when paying their respects for the local boss, used to open their speeches with the phrase 'if I may borrow three sun (around 9 cm) of your roof...' and who conducted business with flattery (known in Japanese as 'three sun of tongue') and determination ('three sun of heart') or that their stalls were made from the smallest pieces of wood available, which was three sun square.
その他にも渡世人として各地方を渡り歩く的屋家業の者が、顔役に世話になる時の「仁義を切る」ときの口上が、やくざと違い「軒先三寸借り受けまして、、、」と始まる事、舌先三寸（口車）で商売するや胸三寸（心意気）で商売するなど、または、屋台の骨組みが木材商で販売されている一番小さい構造材の三寸角であったことなどが挙げられる。