RedactedNarrative: V1 was traveling north out of Little Sabine Bay.  While in the channel, V1 got on plane before the resume normal operation sign. V1 struck the red channel marker number 2 on it's port side in front of the registration numbers.  The collision knocked a 2 foot by 3 foot chunk of fiberglass out of V1.  The red number 2 channel marker broke from its position and floated away. Subject stated there were people sitting towards the bow of his vessel that impeded his visibility in front of him.