As long as it works for you that's all that matters , my set up works perfectly and I just leave the base there year round. I just unplug it during spring - fall....I use a 5 gallon plastic bucket with horizontal nipples and I stand it on a very low wattage electric base that I got on Amazon (rated to be OK with a plastic bucket).
Has worked great for me. Several days of single digit (F) did mean that I got some ice in the bucket - but only at the top and most of the bucket and the nipples remained unfrozen.