|Ziz touching the mark, - or is he?|
|Krysha, very close to the starting mark.|
|Q is very close to the finishing mark here.|
Note that the RD and members of the RC cannot give you a DSQ. They can protest as per rule 60, or they can request the protest committee to take action under rule 69.1 Allegations of gross misconduct.
Incidentally, the shots in this post are here to show how difficult it can be so see, if a boat actually touches a mark. Angles can play tricks, and often you can't be sure unless someone litterally assaults the mark.