RedactedNarrative: Owner of vessel #1 stated that vessel #2 struck his houseboat port side at the bow and left the marina without stopping.  When vessel #2 arrived back to its slip vessel #1 confronted operator of vessel #2.  Operator denied that the vessels came in contact with one and another.  Investigator believes the damage to the houseboat does not align with the damage that vessel #2 had due to his vessel often hitting the midway piling often during exiting and entering the slip due to the width of the slip as compared to the width of the vessel.  Investigator confirmed this damage is consistent with vessel #2 hitting the midway piling and not from the damage of vessel #1.  Investigator can not confirm that an accident occurred between vessel #1 and vessel #2.  Investigator sustained the damage vessel #1 sustained was from a prior accident and not this one.