Great pics!!! I like seeing dogs on docks also, especially them just looking out on the water. My dogs have been on docks many times, as we go camping/fishing quite a bit. I'm not sure if I have any pics.......it seems like I have some of Reggie but I'll have to look. I have tons of them by water. Here's some that sort of fit....

A cute one of Reggie by the water. He's like "Throw the stick already!!"

Reggie looking out over a pond....he's actually sitting on a gigantic rock in the water