While a super magnet may be fine, it's not needed here. I found that even one of those promotional business card-style magnets will do the trick when placed in the area running between 2.5" - 3" down from the power button within the screen's "border". Although a stronger magnet is desirable, as the card type doesn't have a very effective range, so, when attached to a cover, even a slight movement away from the iPad will trigger it on or off...