I am fortunate to have enough land that I spread my own -- every morning - manually. I load the dump cart, drive it to a spot, tilt the bed, pull the manure off and spread it. Whenever we get rain, boy does my grass grow.
Not to mention that it's great for upper body strength - especially when you're old like me and your upper arm keeps waving long after the hand quits

That being said, I want to tip my hat to you in a big way for thinking about such details. Disposing of manure is an important issue that many folks don't think about when they get their first horse