Cushbawn via the Sean Linehan Walk is a good option for accessing the summit. The Sean Linehan trail appears to be altered in recent years and the trail on the GPS and real life appear to be a little different, however the 4km loop trail for the Sean Linehan walk is well sign posted throughout. At the point of return on the Sean Linehan trail, contine via forest trails to the summit of Cushbawn. A loop walk as GPS'd can be done, or a more direct up and down route if desired. Great summit views. Be aware the dirt bikes and quad bikes use the trails around and up onto Cushbawn.