Overall the heater appears to work good. We had a wakeboard session Thanksgiving weekend and I put it up the first week of Dec (saving Nov dry storage fees). Plan is to have it out late Feb for ballast and Perfect pass installs and be on the lake by St Patrick’s Day (40 deg water temps).
Again living in Kansas, my goal was to extend my spring and fall by 6-8 weeks each and have some extra insurance the block would not freeze. My buddies were impressed with the setup since we were still out long after they had winterized.