I do not think it is right to ask for tip in public. Tipping should be a private matter, and it should never be hinted or asked, in my opinion.
I was at a spa, and when it was time to pay, I was asked at the counter, in front of everyone, "so, how much would you like to tip?"
I was shocked, and I just said 15%. But I felt very awkward about it afterward.
I think most people would have tipped in this situation because it would be very embarassing to say no.
I have been thinking about it afterward. I just do not feel what they tried to do was right.
Linda, I feel that your TD is kind of doing the same thing, because most people would feel guilty for not tipping when he hinted so strongly for a tip. Also, if it was me, I may wonder what would happen if I say no, will he get offended and give me a hard time from now on?
I also suspect that it may be a conflict of interest to tip a tournament director who is also the ref in the tournament, just because he will be asked to rule in certain situation, and to make a decision whether to hold a spot for a player if he/she is late, and to seed the players, and do the draw... etc.
I am not doubting his integrity, but it could create some doubt, especially if he has asked the players to tip him.
Richard