Rotomatic

On Friday I tilled up one third of an acre to make my garden plot. Now the question is how best to groom and care for it through the winter rainy season, which came on with a spirit of divine wrath this weekend. Bare tilled soil is vulnerable to erosion, among other things, which is a reason why mechanical cultivation is not always ideal, but I went ahead and did it anyway. So should I use plastic covering? Cardboard sheet mulch? Cover crop? Most likely I will try a bit of all of the above. My goal right now in this and other questions is to try a variety of strategies and see what works best.