Donated water bottle above.... Drill 5/8 holes all over... Inside stopper. Stopper inside... Post loop end... In the field..... We'll see how the bottle holds up over time. Hogs are allready going to the feeder. Hopefully Ill be able to get some video also..... Everything Iused was laying around the garage, and the bottle was 'donated' from work, So total cost = $0.00