i did aerating for the first time for 4 of my customers and OMG was that a workout. I rented a clemmens i think it was. the damn thing weighed like 300 lbs! making it almost impossible to control. i work out but i cant lift 300 lbs...do you have to be able to lift 300 lbs to control this thing or is there a secret that i missed that will make it easy to control....because after 5 lawns including my own...i was tired and sore btw i am no where near out of shape..i am 20 and work out 5 days a week are there better models out there?