i also use a lawn push/pull spreader for pell lime, fert and larger seeds like rye and oats. I use it on very lumpy, rocky, and uneven ground. Its a bit of a bear when the hopper is full, but as it gets lighter its not a problem. my plot is 1/3 of an acre and is not flat. Its a cheapo scott's model with plastic wheels, larger pneumatic tires would be a breeze in comparison. I take it if its a that remote you wont be tilling/discing? After a few years of no tilling and broadcasting into killed sod it wont be buck different than doing your lawn. It may also be worth it to smooth out the trouble spots by hand with a shovel and rake, do a couple spots each year and you'll be good to go.