Something of a novice here but last year I bought a home and, desperate to build a fast-growing natural privacy barrier between myself and the neighbors, I planted rows of Leyland Cypress and Thuja Plicata. Due to my ignorance at the time, I didn't realize a couple of the Leylands I bought had already been topped to grow as shrubs. Now they're each about six foot tall, but with multiple leaders. From what I've read, the best way to handle this is to identify the "strongest looking" leader and cut back the others, but I just want to be sure that the Leyland will continue to gain in height (which is what I want) or if it makes more sense to replace these "topped" Leylands with ones that have clearly defined leaders. Thanks in advance for any assistance.