It is nice that the level spot I have is concrete in a building but all you really need is a level (or more accurately, flat) area the length and width of the tractor + loader.
Serious question with no sarcasm, etc. intended.... You obviously have a tractor and loader. Can’t you make a flat spot pretty quickly? Even if you’re at a job site seems like the time spent making a flat spot (if you have a box scrape, about 5 minutes, maybe a bit longer with loader only depending on how good you are with the loader) would be less than the time to wrestle with a 1000lb loader that won’t line up.