I agree with Gotap_D, that it depends on what he has a hold of
Strictly-speaking, from an energy-conserving standpoint, the dog that expends less energy is going to take over and win after the :30-:40 mark (this is why I prefer methodical dogs to barnstormers).
However, if a dog has a hold of a key spot (like a paw) that is vulnerable to a shake, and your dog knows it, he should shake-away and break what he has, while he has it.
Other than that, I prefer a holding/rooting type of dog.
Jack