I am interested in replacing observation hives at the nature center I work at. I was very interested in the ones made by Draper Bee ( seen at Draperbee.com ) . The old model we had was constructed long ago by who knows ? . I feel it was very difficult to maintain . I have seen many plans on the web. It may be possible for me to have one built . Can anyone suggest a particular model over another or maybe any idea on how the ones made by Draper Bee are working out. ??? I am still a green horn at Beekeeping any suggestions would be helpful.Thank you Michele