IME, successful breaks have happened using the TTT format: pull through the front, float back; pull through the front, float back; repeat. I usually will make a circle with my finger in the air to indicate the direction of rotation (clockwise or counter) just depending on wind.
In theory, a chase group should do the same format, but doesn't always work because of a lack of coordination, experience, and/or variation in engine sizes (it sucks when one guy tries to rip everyone else's legs off). But most times, when the chase group latches back on, most of us would get blown off again anyway at the next key section of race, because of our lack of engine size compared to lead groupers.
But in one race I did make the podium once chasing. About 6 of us chased after some tough hills to a lead group of mostly climber types (I remember mostly just sitting in during the chase, since I was totally gassed and trying to recover, and the other chasers were pretty motivated). Being with the climber types made the sprint much easier for me and other sprinter types who managed to latch on the lead group of 19 (out of 50 racers).