they might hope for an easy landing without any deep water coming right up to any cliffs , but , in any case , they would have to make their landfall , and then they would have to sink the sailboat , and then they would have to take their chances striking out across the rough country , seeking a place to hide themselves , and they would have to find the means to find their way back to the mainland , probably by stealing someone 's boat , and hopefully a better boat than his own , such as one with a big powerful motor on it .