At the start of the last Vendée Globe in 2016 there were seven of the 29 IMOCAs with foils. In last year’s 2018 Route du Rhum Destination Guadeloupe half of the IMOCAs which raced had foils. And in the upcoming 2019 Transat Jacques Vabre more than two thirds of the fleet will have foils. In less than four years foils have become the rule rather than the exception. But they are still very much in the early stages of development. Less than one week before the start of the Bermudes 1000 Race, the first of the 2019 IMOCA season, we review tips and shafts, by Tip & Shaft.