try putting a slinky on to get the mane on the same side....
Woah, never heard of that before :)
As long as it's long enough, you could braid it on the side you want and leave it for a few weeks. It should make it stay, but be prepared you'll have a wavy mane.
Getting horses used to clippers- Turn it on, let them smell it. Leave it on for a while, so they can get used to the sound. Do their legs first. If they're okay with that, do their bridle path and then their face.
If their outside horses, don't put MTG in their mane. It will bleach it out. Plus, it smells like bacon.. Who wants their horses to smell like bacon?
I like vitamin E oil, and Cowboy Magics concentrated detangler and shine.
Those won't bleach their mane if you keep them outside.