I'm not too much into cover crops. Seems they are as much trouble to turn under as is dealing with weeds. I may plant some sweet peas, some lettuce, and some turnips, all over planted just to act as a soil stabilizer. If planted, those will likely be pulled and added to the compost pile in the spring, rather than being turned under. Most of my beds are planted in fall and winter crops, so stay in production 12 months out of the year.
I'm hoping to make more compost and of better quality this year. I lost access to horse manure a couple of years ago, so need to find another source. My compost is generally about 80%-90% oak leaves, so need to start adding manure and more greens. I'm getting so many raised beds that many bushels of compost are needed each year, just to keep the beds filled to a decent level.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.