A disc which is cracked or perforated is illegal. See sections 802.01 D, E and F. A disc which is cracked during a round may be carried by the player, but not used, for the balance of the tournament. The player must immediately declare his intention to carry the newly cracked or broken disc to the group or be subject to penalty under 802.01 E.
What does "cracked" include? I'm wondering specifically about a certain Pro Destroyer that I have. I through it into a tree rather hard one day and now it has what I would call a gash in it. It is ~1 inch long and goes ~1/4 inch into the disc, starting from the edge of the rim. Isn't this rule intended for a cracked flight plate in the middle of a disc?
Anyways, the main point of this post was for section F which reads:
All discs used in play, except mini marker discs, must be uniquely marked in ink or pigment-based marking which has no detectable thickness. A player shall receive a warning for the first instance of throwing an unmarked disc if observed by two or more players of the group or an official. After the warning has been given, each subsequent throw by the player with an unmarked disc shall incur one penalty throw if observed by two or more players of the group or an official.
I guess I'm wondering two things. First, why or for what purpose? Second, what satisfies the condition of "uniquely marked"? Do the different hot stamps for each disc make them unique? Do you have to write your name/PDGA or something on them? If somebody dyes them (and removes the stamp in the process) are they uniquely marked? Since I don't write my name/info on any of my discs, am I violating this rule? Since I putt/approach with non-stamped Ions am I violating this rule? I understand the need to know if it is a PDGA approved mold or not, but it doesn't seem like this rule guarantees that, while at the same time giving room for somebody to stroke another player over something very petty.