Monster wave rider Gigs Cilliers, 57, will be telling his story this month of how he and tow-in compadre Jason Ribbink nearly died while hunting a 100-footer rogue wave off the Wild Coast. Technically, it is known as a convergence wave. Cilliers, a four-time world champion kneeboard rider, will speak in Cape Town at Slide Night at the Centre for the Book on Wednesday March 15, as part of the month-long 14-event Wavescape Surf & Ocean Festival.