Partway through the ‘blue ribbon’ segment we encounter a drained lake. There is a pile of cans next to a platform. If you jump on top of them you just barely can’t jump to the platform next to it. If you walk around the platform there is a sort of long cutscene you have to watch. It may be possible to jump onto the platform and skip the cutscene trigger. This is at the part where there are 3 cheep-cheeps flopping on the floor, and the cutscene in question is when Bob-omb talks about the boat.