I have no issue with a sweeper one way or the other, I never think where lads stand on a pitch is a matter of huge importance. From a tactical perspective I always think it is thought of in too rigid a way though. I actually think the concept is outdated anyway or at least the notion of thinking of it as a sweeper probably is. No team has six backs back when they are attacking, let alone 7 - so the reality is that most teams playing a sweeper are actually only playing a +1. So if the opposing team have 3 forwards up, they have four backs etc.
Also the concept of being a forward short when playing a +1 at the back, only really applies on the first phase of ball played in (assuming it is played in and not carried in), once the attacking team has the ball they are joined by team mates.
The other issue I have with the popular perception of a sweeper is the notion that it has to be a forward that is bought back, it doesn’t, a midfielder could do it just as well and he could even join the attacking play from time to time, coming late to create an extra man. I have long thought actually the ideal place for Crummy to play was at midfield, but spending most of it just behind the half back line.
But my basic point is that apart from the above, there are loads of ways to get extra defensive cover without doing a ‘Waterford’ on it. But probably the best way to do it is do what the footballers do, scare the opposition so much with an attacking threat that they are all playing with a +1 or even a +2, which by default is giving Dublin the same advantage (we are the only team credited with playing a sweeper, O Sullivan, without actually bringing anyone else back on a permanent basis)