We had the mini bull terrier national at my work a month or two ago, that was really my first and only experience with them. I supervised the dock diving time, and it was freaking hilarious. One dog had to have pool noodles zip tied to his life jacket, making him look like a little doggy pontoon, otherwise he'd drown. Another absolutely refused to let go of the bumper for a good 3-4 minutes even with super awesome treats dangled in front of his nose. They were just such a riot.