I have two of these and have put 130 broilers in each this first year. This is the best tractor!!! I intend to install doors on both ends for next year so my birds can free-range...but for this year they worked fantastic. I'm 5'8" and female and have no problem moving these tractors 1-2 x a day. We have sloped terrain with little bumps here and there...so sometimes I'm going uphill! And I go the length of the property (22 acres) and then turn the thing around and go back!! You just do small turns each day and you can do a complete 180 without stressing the birds.... no problem. I'm a huge fan and highly recommend them. The water tank, the heavy-duty tarp, the Plasson waterers, the tray feeders...this is just the smartest set up!! I can jump in and out of these tractors quite easily, too, so I can check on my birds and clean the waterers, etc. Amazing design!!