If you’re ever unfortunate enough to require a tow, watch out for over-enthusiastic motor-boat drivers. A sailing yacht should not be towed at much above a speed equivalent to the square root of her waterline length (around 5 knots for 30 ft on deck). At this speed she is easy to steer and makes little resistance to progress. At ‘hull speed’ (around 1.4 x the ‘root speed’) she is flat out. Even a single knot faster is going to strain things mightily. It’s not easy to ask a fisherman engaged in saving your ship to slow down, but it’s worth a try. The trick is to mention it politely while you’re passing the towline rather than wait until your cleats start pulling out.