I feel like they need to issue challenges that are just quality of life stuff. A fish Buck reward is not incentive enough because you need to gratify the victory immediately.
Win the retard challenge? You can choose to get take out, a new movie (the first Stewart Little, a movie for literal toddlers, and something actually good but it should be a poison prize so they don’t get it and chat has to do TTS), or one of those Japanese gameshow punishment prizes (another contestant of your choosing suffers).
Another way is you give a privilege to a certain fish, like Josie wind the challenge so here’s a PS1 with two games, but it’s for Josie. The minute any fish plays with it outside of the presence of Josie a shark destroys it.