A pivotable deployable bulb mounted foil apparatus for a sailboat can pivot a
foil
mounted within a keel bulb remotely as needed to provide lateral resistance for
the sailboat. The foil or foils can be rotated between a nested position for greater
speed when the foils are not needed for lateral resistance in the water to an extended
or operative position when needed for lateral resistance. The pivotal bulb mounted
foil is especially adapted for use with a canting keel where the sailboat loses
its lateral resistance from the keel when the keel is canted.
