Brother, as usual, you seem to miss the point. If you agree that there are valid opinions that say that the shari'i beard is fulfilled by less than a fist length, then how can you say it is a doubtful matter? No one says that the Prophet salallahu alaihi wa salim had a short or even trimmed his mubarak beard. As you said we have proof of Sahabah trimming it to a fist length, but is there any proof that this is the limit? Do any Sahabah say that the beard can only be trimmed to a fist length, otherwise it is against shari'ah? No. If there were such sayings, it would be different. So some ulama said that trimming to a fist length is the limit, while others said trimming to whatever length is permissable, this is valid ikhtilaaf and no one can say otherwise. You can stand upon your opinion, but you can't call another person doubtful, since you could be wrong and they could be right. As far as the wudu issue, yes there is evidence for both clearly, BUT even then the afdaal thing to do is try and fulfill all the positions of all the mathaahib (as you mentioned). But the beard length issue is NOT clear issue, since Rasulullah salallahu alaihi wa salim and the Sahabah radiyallah anhum did not specify the limits. Anyway, it is a small matter, how about someone talk about pride or something that will really effect us. We can have a big beard but if we are too proud to take benefit from the ulama, how will this help us? Many people are saddly like this, myself included.