Good Grief! I have to bail out at least half of the water first. My 100 gallon troughs are flat bottomed.
So are mine... I gave up using the bale spike on the tractor after punching a hole in one, and got tired of making no progress with a bucket. If its not on flat ground, I can lift it up in front to dump it. If it is on fully flat ground or a wider one, my back is to it and I use my legs. Even my chiropractor is surprised he hasn't seen me lately lol.