I was in a 200+ member / 50 entry fee Survivor league, and was one of the lucky ones that won. The guy who ran it was a class act, and the league ran very smoothly. Since this is the first time I have won a league, I wondered what the SP thought about a "thank you" donation (yes/no, and amount if yes), as I know it was a time consuming affair. On the other hand, I wouldn't want him (or anyone else in the league) to think it was a payoff.