We've enjoyed going out to my parent's pool a few times this summer. Bo really loves it. Cruz loves it too, but I don't so much love trying to hold on to his slippery body as he constantly tries to squirm away from me. So what we usually do is head out to the pool right around Cruzie's nap time, then lay him down in the house while we swim.
This year Bo stand in the pool with his head above water, but he feels more comfortable swimming with his life jacket. His mama likes this fact.
We even did a little swimming with a watermelon, in an attempt to keep it cool ;)