a suggestion that WGT set daily challenges for Credits i.e Longest drive of the day, longest putt of the day, most eagles in a day etc. (you get the idea)
also you could have a section where players can set challenges and bet credits that no one can beat it . e.g you land an approach shot 1ft from the pin on st andrews #2 and bet 100 credits no one will beat it . if no one takes the challenge you get your credits back. if someone challenges and loses you get the credits back. if they beat the challenge that player wins 100 credits..... or something like that.
it could cost a player 10% of credits to set a challenge and 10% of credits to play a challnge. this way WGT receive a cut.