Wow! Your pool is so pretty.
Haha, I can totally picture what Gracie does. My min pin, Charlie, has been swimming twice and isn't too sure about it either. The first time he went swimming it was off the back of my father-in-law's boat. The second time was this past forth of July in my parents pool. He liked the lake better. I'm not sure why, but he wasn't too fond of the pool.
Nova, my dachshund mix, went in Kay's pool at the PT meeting last month. She wasn't too fond of it either. She sat on the step for a little while and then on the raft. She was scared though. She wasn't too good at actually swimming, but Kay helped her.

My friend has 2 cats and a chihuahua. She was worried about them falling into the pool. Even though they are never left out there unattended, her biggest fear was of one of them falling in and not being able to get out, and her not getting to them in time. To ease her worries (or possibly confirm them) her boyfriend got in the pool with each of the animals (yep, even the cats). She said the chihuahua did great, swam right to the side and was able to get out at the steps. They were surprised at how well she did. One of the cats also did very well, but the other struggled a bit, but did get out on her own. She really felt better knowing that they all did well and can all swim. Though she still never leaves them unattended, and never will.