"The waterschappen don't stop their pumps out of hospitality or something,"
So do they get compensation?
So do they get compensation?
Presumably making the effort to allow skating is a vote winner. Even in places outside Friesland, when it looks like skating will be possible various authorities take steps to encourage ice formation by closing sluice gates and stopping boat traffic.
There is a great documentary (in Dutch) that shows what the foundation behind the Elfstedentocht has to go through every year to make sure they're ready in case the conditions are right to organise the race, not sure if it's available outside of NL: