Are TBHs supered? If the bars themselves make the top cover, they would need to be spaced to be supered. Otherwise, I guess they could go longer? Re: Water diluting the syrup in the barrels, I presume it could be done with a cover that is waterproof but not beeproof?? I like the baggies for hobbyist use. Gerry and the other Visels at [log in to unmask] Winnebago, Illinois, USA