Goofs

In the scene of them out on the river, double sculling under the Ponte Vecchio, it was clear that the long shot was of guys who knew how to scull, but that in the close ups we could see that the actors didn't have a clue, especially Ercole (Brett Dalton) who really made it look like a Labour of Hercules! They were quite obviously so incompetent that some form of float had been attached to the boat to prevent them from capsizing. This appeared to be of a light coloured wood, and was clearly visible in two shots, one out on the river and another as they returned to the dock. In fact, once back at the dock they both drew their oars in out of the water while still sitting in the boat, something no sculler or rower would ever do, as it would almost certainly flip over (without that poorly concealed float attached). It is always necessary to get out of the boat while the oars are still all the way out on the water.