Any process that activates or increases the frequency, rate or extent of lateral attachment of mitotic spindle microtubules to kinetochore.
Synonyms:
exact_synonym:
up regulation of lateral attachment of mitotic spindle microtubules to kinetochore; upregulation of lateral attachment of mitotic spindle microtubules to kinetochore
narrow_synonym:
activation of lateral attachment of mitotic spindle microtubules to kinetochore