I fed some syrup this fall in plastic baggies, Just cutting slits in the top of bag laid it on top bars and it really worked well.
So now I am thinking I will fill bags while it's cold and lay them in the freezer on their side and let them freeze. Then in spring, take out what I need and lay on top bars, slit tops of bag and done. Lay a bag of syrup and a pollen patty and stand back.
Last year i was constantly fighting rain. Set jar on top of inner cover and here comes the rain. Plus I a had jars everywhere.
All of my inner covers now are reversible so I can feed and put the outer covers back on. When not feeding flip inner cover over.