The final step just experiment with the Mag Zone to cover more or less area that is needed. Note that the Zone works as a "Falloff" Zone so the Magnet's intensity decreases the closer you get to the edge of the Zone.

You can scale the Mag Zone very large in the x and z (like two or three hundred %) for example if necessary to get the Magnet's intensity to be stronger along the outer areas of the hair. 

Hope you find the info of benefit. Good luck!

Hey! His nose is dry! ... Someone should lick it,  just in case. - Diego