I would agree this was the obvious explanation if it was not for the reports in the Sault News from 2017 where the family were quoted;Recently heard about this RD case from 1996. Very puzzling case - as are all MP cases where no trace of the person has ever been found and there's no evidence than anything other than a disappearance occurred, etc.
My first thought is this: By all accounts, RD was intoxicated when he vanished - so, he may have just wandered off from the bar/party where he was last seen - and someone ended up accidentally drowning in one of the many bodies of water that were in that area. Since this happened late at night & given his inebriated state, I find this explanation plausible - maybe. As to why he has never been located - it's possible the body got swept away & or sunk to the bottom of the body of water, etc. - and was never located because of this.
This seems the most likely explanation given the area, etc.
Side-note: In looking up this case, it's not surprising that RD is sometimes confused with the late Bob Dole, who ran for president in the same year RD went missing (1996).
“The biggest thing I want to say this year is some people have come forward and given the police new information,” said Scott Dale, who has spearheaded the family’s search for answers over the last two decades. “We believe them to be really good leads.”
Scott admitted the newly received information wasn’t exactly good news.
“We’re not looking for a missing man anymore,” he said. “We realize it is a homicide — we are looking for Bob’s body.”