It would definitely be worth sittin on it at least a couple times, because usually a rub is a sign of a bucks territory to show other bucks they are in that area...it works both ways though, i was hunting in croom when it was open, found a good rub on a little pine rubbed down to the core, sap was coming out, sat on it 4 separate occasions and didn't see nothin but a couple does, but that rub was super fresh so i kno there was a buck in that area. Definitely give it a go though!