The more forward your CG is, the more SENSITIVE it will be trying to hover. If your CG was about 1/2" in front of the tail wheel, hovering,T-rolling or just verticle flying is all you would be able to do. As with anything, anyones tips are going to just be guidelines. As the article states, EVERY aircraft does have that "SWEET SPOT", but some are going to be VERY SENSITIVE just moments outside of the sweet spot.......if you want to hover EASIER then yes a rearward CG helps.