Crossword Clue:

keep ones seat on sit a horse

Answer	Crossword Clue
ASTRIDE	One way to sit on a horse
EJECT	Suddenly leave one's seat on a plane?
PARKSIT	Puts one's seat on a seat, in slang

SEALEGS	Ability to keep one's balance on a ship
HOMEBRED	Raised on one's own ranch, as a horse