This happened twice over the weekend. After sitting for an hour or so in the nice 105 degree weather, I would fire up the boat and get on plane or even less than plane and the boat would bog down as if I pulled off the throttle. I would then pull back to idle and try again and it would run fine. Also, this happened after we re-fueled at the marina. I am thinking vapor lock, but I thought that is when the boat can't start after sitting for awhile in the heat. This is on a '06 Supra 21V when they were known for having vapor lock issues.