Don't disregard them just because others say they wont work or it's the wrong time of year, as speaking from experience they CAN and DO work ANY time of the year if the fish want them.
In colder months (as well as Summer) i've found they can be effective fished with a feeder or method as they sit above the feed (depending on the length of your hook length).
Give them a try as you have NOTHING to lose.
