Remember towing is potentially dangerous. You should practice capsizing and releasing tow lines and practice tow in different conditions. The more boats involved in the tow the more things that can go wrong. Again, never put the group in danger to save one person. A good leader should never allow the situation to develop into a dangerous one. If leading a group try to have another person or people do the towing. If you have to tow you can't lead the group. When all else fails and the situation is too difficult or dangerous it is time to use signaling equipment and get outside help. A VHF radio would be the best signaling equipment to have so you can tell the rescuers what the problem is.