I started doing that a few years ago and it does work wonders. I'm lucky that my garden gets flooded about once a year so it has tons of nutrients and the floods also push horse manure from the pasture next door. That said, I plowed last night and will till and add clover to most of it on Saturday.
Just ordered some Durana white clover. Supposedly it is very hardy and will be great for the bees. It if grows well I may plant a lot more in the spring.