Here is my theory about tethering yourself to the boat in distance races:

1. If you don't have any children between the ages of 0 and 18 and you are not married or you ARE married and your wife is not pregnant, don't use the tether.

2. If your children are all grown and on their own, don't use the tether.

3. If you DO have children and/or pregnant wife, USE the tether.

It's pretty simple. If it's your own life at risk and that's all, don't use the tether. If you are responsible for other people in your life, stay attached to the boat!