We work our Belgians... We log, hay, do hayrides etc., and most of our horses have all had full tails and we never dock them when we have foals. My Sam has a full tail and while it gets nasty cause he's a dirty gelding, I would never take it away from him. With all our work horses, we just keep the tail trimmed above their hocks and have never had a problem. We also use to pull, and had tails on our horses then too.
I enjoyed watching the video's of the Clydes.. but then I enjoy watching most video's of draft horses.
The bad part about this subject is everyone is going to have their right to an opinion, be it for docking, or not for docking. I'm never quite sure why this subject is brought up time and again on different forums other than for members to get after each other on who's more right than the other.
I myself skipped the 15 pages of bickering, and just looked at the photos. :) Some nice ones. I enjoyed the old photos too.
I would say that I do not like docking in dogs and horses, however in sheep I find it a necessity. Most sheep owners dock their tails because their poop will get stuck in the wool, destroy it, make it difficult for the sheep to relieve itself, plus it looks much better with the tails docked. All of the sheep at the barn (Yes, I have shown sheep in the past) are docked within the first week of their lives using the rubber band method, which cuts off the circulation in the tail until it falls off.
I think cropping dogs ears and docking their tails is cruel because there is no use for it whatsoever, except for the dogs with longer hair that their feces could get stuck in.