Get some Chris Christensen Ice on Ice. After all the mats are out...totally drench the areas that mat (I use a spray bottle and spray as I work through - usually the leg feathers...front and rear, butt area, groin, behind the ears, and sometimes the chest if the hair is long). Work through with your fingers...then comb through and let dry (or blow dry). Don't rinse out.
This is NOT slippery...no silicone...does NOT make the coat oily...and works WONDERS. You know how many dogs I have with heavy coats (if you don't...the number is 10). We get about one small tangle a month...per dog. They swim every day...and don't always get blown out...just toweled off.
You can do this weekly....if you want. I don't. I only apply it about once every 3 weeks after combing through the dogs. I just spray as I comb. It's fine to put on dry hair...or wet hair. But I think it works better if you use it when the dog is totally dry. If you run into a small mat or tangle then...spray it down, work it through, then wait a bit. Then work the mat out.
Also...make sure to apply it immediately after your dog gets bathed and is dried. I spray down the "matting" areas then. Conditioner does not keep mats from forming...Cole gets totally sprayed down with Ice on Ice the day we get home from a show, so I won't be battling mats before his next bath (which is in a week). Mats only take a day or so to form...and they can get really large and tight in that time, so I don't even let them get started.
I also don't brush the dogs...I comb them out. I only brush as a finishing touch. Combing gets each tangle as it's starting. You can feel a comb "catch" whereas a brush won't. I find that the Ice on Ice works better as a "preventative" than as a remedy if the dog's already matted. It does work. Try it.
Ice on Ice also keeps the coat from turning red from the sun. It keeps the dirt from sticking to them. It keeps the coat from breaking. Etc.
I get the concentrate and mix with water in a spray bottle as directed. One bottle will last one dog a long time.
Pricing seems to be the same everywhere, so I just order it from the Chris Christensen site itself.
http://www.chrissystems.com/iceonice1.htm