Here's one of two i built,55 gallon drum...Cole roll thru top of drum,use a piece of angle big enough to attach a winch on it bolt it to another tree,take a piece of cable an wrap it around a limb with pulley on it.Plastic drum's are to easy for squirrel's,i've had them chew hole's in them.I did have to wrap bottom of these feeder's with cage wire(just big enuff for corn to pass thru)cause the squirrel's would get on slinger and chew wire's going to solar panel.I also made easy on an off lid's for them,these picture'd are bolt on ring's,did away with ring and mig'd a 11/2 lip on lid.