For those that spread large amounts of compost, what do you use? I'm looking at a Eco-Lawn applicator. Also, what depth do you normally spread? At ¼" it would take ¾ cu. yd. per 1000 sq. ft. which means I'd have to fill something like an Eco-lawn, with it's 11 cu. ft. hopper, 1.8 times per 1000 sq. ft. On their site they say ½ cu. yd. per 1000 sq. ft. but even then the hopper would only cover about 800 sq. ft. Am I reading this wrong? Is my math bad?