Hi, I currently use the Ryan Lawnaire IV+ to Hollow Tine my customers lawns through the Autumn/winter months. This year I wish to incorporate Solid Tine aeration in the summer and ideally would like to change the tines on the Ryans to suit....unfortunately I understand there are no Solid Tine options for the Ryan, only `open spoon` types, I have no experience of these, can someone please advise me on their suitability for solid tine aeration, one of the key factors is there needs to be no cores removed, does the open spoon remove a part core or does it slice similar to a blade type, i.e. no cores?? I really dont want to have to purchase seperate machinery just for Solid Tine AR in the summer. Help much appreciated.