Re: bee feeders
Many of us in my club feed our Nuc's that way. Some just drill a hole in the cover big enough to accomadate the lid of the jar and put wire insect screen over the hole. The bees can get the syurp just fine through the screen. Others add a piece of 1x4 on top of the cover, drilled through both. The "shoulders" of the jar rest on the 1x4, keeping robbers out and making it harder for the wind to knock over empty jars. You do get a fair amount of bees coming out with the second method.
I'm like the weatherman- right about half of the time.