RedactedNarrative: Based on interviews, vessel was traveling north on the St. Johns River, just north of South Moon Fish Camp and south of Lake George. Vessel was traveling at an unknown speed; approximate time was between 1100 hours and 0100 hours on the night of May 31, 2014 and the early morning of June 1, 2014. It was extremely dark with low ambient light and/or vessel running lights. Vessel entered a sweeping curve to the right, then a sweeping curve to the left. The "green light" Channel Marker 23 can be seen north of this position. Vessel continued to sweep to the far left side (into the Lilly pads) on the river edge. The vessel initially struck and broke two (2) 2"x4" poles placed for a shiner (bait fish) net stand. This impact caused the windshield to separate from the frame, striking one (1) passenger in the face. The vessel then slowed and was steered sharply to the right, before impacting (striking) Channel Marker 24. The vessel struck Channel Marker 24 with a glancing (sideswipe) impact causing major hull damage to the port, rear quarter of the vessel. It is my opinion, injury suffered by the operator and passenger to left hand(s), were caused while attempting to support ones-self prior to the secondary impact. The Channel Marker 24 showed only contact transfer and no noticeable degree of tilt or lean from impact. Channel Marker 24 and shiner stand poles were located well outside main river channel. Each pole and Channel Marker 24 had "highly-visual" red reflective markings. After striking Channel Marker 24, the operator turned vessel about and made way to South Moon Fish Camp. The operator grounded the vessel on business boat ramp. Several residents of the South Moon Fish Camp were said to have been awakened for assistance. None of the vessel occupants requested emergency services.;injured1 SHOWED INJURIES TO LEFT HAND, LACERATION(s) AND SWELLING.; occupant2 had NOSE WAS BROKEN. ADDITIONAL CUT TO BRIDGE OF NOSE REQUIRED THREE (3) STITCHES.; operator SHOWED INJURIES ON LEFT HAND FINGERS (CUTS) AND LEFT FOREARM (SCALP/SCRAP).