We have a swimming pool in the garden. The garden has high fences and is not overlooked. When I have guests I will wear both halves of a bikini, when I am alone, I am happy to leave the top off and sometimes not to bother at all. My attitude is "my pool, my rules" and as long as I am not subjecting anyone else to my attire or lack of it to think that this is my business. Besides, I hate the feel of a wet swimming costume if I can avoid it.