My dad and I are in the process of building a small corral on one of our farms. Maximum head at one time would be 40 pair. I would like to try a bud box in there. I am looking for advice on the dimensions to build the box and alleyway. A portable squeeze chute will be used, and load out will be down the same alley. Any helpful hints and suggestions would be appreciated. Pictures and drawings would be better! TIA