I can`t for the life of me understand what all the fuss is about weeds. With the exception of Japanese knotweed, (which I have been fortunate enough never to have had to deal with), there is nothing that cannot be eradicated by persistence and regular attention. If you have a very weedy patch, (couch, bindweed, docks, dandelions, grasss, etc), my advice would be to dig late on, leaving it as rough as possible, (massive lumps if possible), and let the frost work on it. In spring, when it has started to dry out, go over it with a fork and shake out the weeds, roots and all. I would then compost everything, (I use a closed box type container), but bear in mind that fresh seeds will be germinating on the cleaned up patch at every opportunity, so vigilance is required, in the form of regular hoeing/shimming. Regarding weeds in rasps, if they get too bad the affected rasps can be dug up and replanted and they will be fruiting again within 12 months.
Pete