Rule 34 says the RC shall "IF POSSIBLE" replace or substitute a missing/out of place mark.
If it was NOT POSSIBLE to replace/substitute a mark once the problem was realised and before the boats rounded the mark is that grounds for Redress under 62.1(a) (improper action or omission the RC)?
R34 puts the onus on the RC to replace the mark only IF POSSIBLE, so if it was NOT possible (due to distance/weather) the RC has no obligation and so no grounds for Redress under 62.1?
I'm recalling an offshore race a few years ago, where a mark was well out of sight of the RC, and it dragged into dangerously shallow water. When the boats approached the mark some rounded it and some did not on safety grounds. I honestly can't remember the outcome of the results.