Related to this: Some TDs don't feel that poisonous plants should provide optional relief as not everybody is allergic. I think its silly and you're a poor host if you can't make that exception. I would certainly take an optional rethrow instead of suffering for a few weeks if I landed deep in poison oak.There are places on courses where people will not play from, but are not out of play. Without this rule, a player would have to DNF to not play from one of those spots. Say there's a fallen tree hung up that may fall near your lie at any time: there's not an obstacle or hazard to avoid, so the re-throw is the only way to play from a different spot.