I'd use the top of your foot to give you that extra little reach. Just don't kick anything boney on your opponent. You can still deliver a lot of punishment to someones thigh or calf area with the top of your foot. Front kicks to the body and round house kicks to the body are great also. Check out Mirko Cro-Cops roundhouse to liver against Fedor's brother...if you don't believe me.
__________________
|