Hank had a great time splashing and running around, but it took a couple of local kids to get him to actually do the doggie paddle. The girl went out into the water, just beyond where Hank could stand and just calmly stared at him, blew bubbles in the water and bobbed up and down. Eventually he realized he just HAD to get to her and figured out he could swim.
Then, we gave her little brother a tennis ball and he threw it in the water so that Hank had to swim to get it. Thanks for the help, guys!

After all of that, he actually slept almost the whole way home in the car. He curled up into the smallest ball you've ever seen a 75 lb dog curl into.