So about a year ago my QH mare rubbed the middle of her mane out. She had a to die for mane that was shoulder length . Now its all ratty looking .
Shaped like this - lll'''ll .The longest is at her withers (18" long ) and the short middle part is 8'' long .
Should I get my step-grandma to pull it even with 8" or trim it with thinning shears ?