The notoriously windy conditions on Table Bay at Cape Town, South Africa, greeted the back of the sail for Gary M. Ropski and his team.The strongest wind Ropski has ever sailed in carried the boat speeding toward Robben Island.Then, the wind vanished.“The wind went from 20 or 25 knots to almost zero,” said Ropski, a partner at Brinks, Gilson & Lione. “And you had to change your whole strategy, maybe even change sails to adapt to light air.”Ropski, along with McDonnell, Boehnen, Hulbert & …