Originally Posted by
Lead Balloon
Floats do work well on grass as well as water, unless ... there's some defect or damage that affects their structural integrity with the aircraft.
In which case it's perhaps a toss-up between chewing up someone's nicely-manicured grass during the resultant ground loop or finding yourself upside-down under water. Not having done any UET or similar training, despite the fire risk if the aircraft flipped but equally not wanting to drown, having experienced undercarriage failure on landing and lived to tell about it I'd still think the grass would be a better bet. Especially if emergency services can actually get to the plane right away, without having to swim for it in rough water.
Of course if the misaligned float creates so much drag the plane can't continue to fly, there's really no choice but to stall it in and hope for the best.