Practical test: Lely Hibiscus 1015 Profi twin-rotor rake … but what she does do, extremely effectively, is to rake in up to a full 10.20m bout of grass into the one swath, ready for picking up by either a self-propelled forage harvester or round/ square baler. Marketed as a more compact and lower cost alternative to the smaller four-rotor raking machines, we test Lely’s flagship twin-rotor Hibiscus model, the 1015 Profi