Well, when has RoLy ever been accused of being a defensive, conservative coach?
Kersten needs a spark to get him using his full potential, he is a good reader of the play, good mark and good kick in general play. All attributes needed by an attacking backman. Nothing to lose by trying it.
We recruited another gun forward a few years ago who was going down the same track as Kersten is at the moment and eventually threw him back where he became an AA defender. Why wait so long with Kersten, do it now.