Moving Closer
It appeared to be a log; however, it also seemed like it was moving in the water. Brad knew logs could not move like that, so what on earth was it? Brad began moving his boat closer to the object, and he realized that the thing was busy moving closer to him as well.
He moved closer and took the opportunity to investigate the object properly. He still thought it might have been a log drifting in the lake, but upon closer inspection, Brad observed something that made it clear that it was not a log at all.