Life Jacket Suggestions??

My fiancé and I are going with his family this year on their annual fishing trip and I wanted to get our dogs life jackets just in case- since we’ll be hanging out at the lake. Looking for life jacket suggestions that work well for whips. We have to use a special harness so that she doesn’t slip out so I was just curious if anyone has ever used a specific kind of life jacket before. Also- do your whippets enjoy swimming? I’m not sure she’ll even be in the water at all and this is more of a precaution. I don’t think she’s that type of girl haha but we shall see