It was never reported from a credible source that the bike was thrown onto a pile of junk. That was a poster who came on here a couple nights ago who said that, and said how welll he/she knew Whiskey Bay, but actually he/she had some geographical facts wrong about the exit. I saw it, but was too tired to rebut it.
The bike was initially thrown into 2-3 feet of water, according to LE reports that when it was found part of the frame was showing, but mostly submerged, accounting for the drop in the water level.
There was various trash around (During my visits I saw pieces of tire tread, rotted fabric, degraded plastic junk, etc.), but the bike was thrown into the water and if it was thrown the night of the disappearance, it wasn't visible.
The handgrips perplex me. Had the perp wanted to help hide the ID of the bike, why not dump them in a trash can in New Orleans, for example? Why leave them anywhere near the bike? Why not permanently separate them from the bike? That has bothered me from the beginning.
ETA: By "2 to 3 feet of water," I mean that the bike was 2 to 3 feet UNDERWATER, before the level fell.