A:AnswerThe GoPro sits toward the front of the Floaty, so if nothing else is attached, it's going to be heavier toward the front, meaning it will be pointing with the lens down into the water.
A:AnswerThis Floaty fits directly over the camera, so it can not be used along with the protective housing. For that setup, you may want to look at using the GoPro Handler
A:AnswerThe additional weight of the 3-Way mount would likely be too much for the Floaty to support. If you with this with a handheld mount, the Handler would be a great option.