"If any disputed detail is not covered by the rules, it should be decided on an equitable basis."²
Per tip
It can be said that, as a rule, all cases of play and rules in golf are covered in the golf books and the Rules of Golf. If, however, there are still any unclear rules of golf or a case that has not been written down anywhere or has already occurred once, players can decide at their own discretion. However, we always advise players to involve the game management in such decisions. The golf book "Rules and Decisions of Golf" from the R&A Golf Association in St. Andrews should not be forgotten. It deals with many rules that have not been written and all golf rules and etiquette cases that have ever arisen that do not appear in the golf rules and golf books.
Status: 2018