I think everyone has missed my point, CHEAP AND EASY. I already have 3 floor jacks, very easy to get to, takes less time than starting my loader to lift mowers, jacks roll very easily, 2 old cement blocks, 2 scrap 2x6. Cost ZERO.
Ramps won't allow me to get to the blades with an impact.
Standing tractor on it's rear wheels will let the gas come out the tank on two of my movers.
Need it level to change oil when I remove blades and sharpen. Also can get the oil pan under the mower deck.
This works well for me.
Please use what well works for you.
I like making things that are CHEAP AND FREE.