Hi you lost me, I don't recall saying Piper Cubs weren't useful. I have owned 10 different Cubs and the last J-3 I owned was on contract with the Bur of Land Manage for many years counting horses and cattle on gov property for billing purposes. We would land on the Intestate and fill up at the gas stations. Great airplane, I even got my seaplane ticket on a J-3 60 years ago. But..most Cubs in Alaska and Super Cubs on floats. Norm