i personally love draco meteor...
i usually will end up switching after i use it anyway so the pokemon can be used again.
switching into an intimidate user or bulky pokemon would be ideal.
oh btw the way that skill swap and heatran were used was usually leading with hitmontop. leading to them predicting a fake out. but then switches into heatran and brings hitmontop back. and then cresselia proceeds with the skill swap.
the intimidate also immensely helped his heatran with other fighting types. i think he used a chople berry on heatran so he was able to tank hitmontops like a champ (i would assume) with chople and intimidate support.