Regretful Decision - piece of very rough draft

He leaned forward, pausing briefly, and began a recount of the disturbing and extraordinary occurrence.
While boating through the salt marshes of southern Georgia two nights prior, for the fresh oceanic air and marvellous view of the endless starry canopy which sprawls infinitely in all directions, a startling sound disrupted my trance. I quickly cut the motor and walked to the end of the boat, fearing the heavy thud had been emitted by a collision between some unseen marine hazard or endangered sea turtle and my now endangered sea boat. I scanned the frothy green salt water for any of these, hoping to discover instead some benign and gnarly driftwood. Unfortunately something else floated there in the dark water. Celestial light failed to illuminate the scene adequately and so I squinted, attempting to discern any features of the floating object.
I became curious after deciding it did not resemble any aquatic entity I was aware of, thus I swung around the searchlight attached to the side of my craft and pointed it towards the shape, assured the hot bulb would reveal merely a peculiar arrangement of slimy detritus. I wish earnestly I had not done this, had not shed light upon the abhorrence, the unwholesome body which had bobbed slowly up and down within the center of the searchlight's radius.
I pray that I could have said it was a man. But cold logic cruelly dismissed such an easy conclusion. Why would a man be out there alone amongst the cold sea water and gently rippling grass? Surely no moonspell could be so compulsive. Now suggest it were a waterlogged cadaver, victim of some heinous crime deposited unceremoniously within the maze of marshweed. I would quickly accept this assertion as truth despite its horrific and forensically complicated implications, but no natural process of decay could produce such a result. It was not dead and decayed. It was unconscious.
There are in life many choices to be made, which lead on to further decisions until infinite chains of fate can be said to spread endlessly in every dimension of our being. How damned am I to be shackled to this certain chain! And all the worse to know it was I who clamped that shackle when I pulled the aberration aboard!