Based on the context and the answer, generate a question. 

Context: Here is where they are now . Unfortunately , they had a lousy time getting there . A big squall rolled right over the top of them and kept them " busy " all day . It sounds like it slammed them . The mainsail tore , but Frank says the rip is below the first reef , so they reefed it in and it 's still usable .

Answer:

The squall kept them " busy " by   slamming the boat with heavy winds .



How did the squall keep them " busy " ?