The boat that explodes is different than the boat that pulls away from the dock. The boat that pulls away has a rear deck that overhangs the motor mount and has a white hull. The boat that explodes appears to have no such overhang and a blue hull with a white deck.
When Duke and Tommy arrive at the house to search for Moira, Dukes hair is down. But in the next scene, at the same place, just a few seconds later, it is pulled back in a pony tail.