I actually used to have the same problem with my 3 yorkies grooming until i tried some things, The Brush... The brush you use makes a big differnce. Now I went out of my way and spent about $40 on a Soft Bristle Pooch Brush, This brush is wonderful because it does not pull my dogs fur or hurt them. Once I started using it I noticed a significant differnce. For their beards I use the fine small teeth of a comb. 
When it comes to bathing I make it fun for all and often end up with 3-4 wet mops in one tub at a time. Often times it helps to put a bathing suit on and jump into a bath tub with them, especially if you have a removable showerhead. Dogs tend to feel safer in the tub since they see you are there with them. 
When I make the first step into the tub my yorkies often dont hesiate as much to follow knowing that I'm there. It's different to be in the tub and to be on the outside of the tub.     |