Plugging water change barrel hole

[Craigdillman]

Hey guys looking for some ninja advise on how to best plug a 1” hole in my water Change barrels I have. They are the standard blue round barrels the hole was originally for a spout to take to drain them at the bottem ( located approx 3” off the bottem side wall) but now I’m moving them to a differnt spot and can’t have the attachment it won’t fit

So how do I best plug the hole? Like would cutting the pvc pipe and capping it be best leaving the rubber sleeve in place or does anyone have a better idea or done this before

Thanks