My Neighbor's Pool

I recently had shoulder surgery. Since I have a pool, my Dr. suggested I stand in the shallow end of the pool and move my arms in different directions and use the water as resistance. My surgery was in July and the temperature where I live stays between 95 and 100 degrees during July and August. Every Friday I noticed my lady neighbor coming home at noon. She would bring some sort of drink to her pool and float on a inflatable lounge. We live on a hillside so our pools are visible to each others. There are trees along our fence which separates our properties but they don't block everything. One Friday while I was walking in the pool working my arms, I noticed her in her pool. She wore a one piece. This lady is full figured and not over weight,with blond hair and very nice big tits. I think she is in her 40's. I watched her as she floated around her pool. When she faced me I turned away as though I didn't notice her. Of course I did. I imagined her bouncing up and down in the water. I was getting horny thinking about her so I wandered over to the side of my pool and pulled my cock out of the bottom of my shorts and stroked myself. I love the feeling of the water on my cock as it moves in the water. There is no line of sight into my pool from the houses next to mine. While I was watching her, she got a call on her phone. She paddled to the pool steps and got out to take the call on her cell phone. I was watching her from my vantage point as she pulled the top of her one piece down to her waist. She kept talking on the phone. I couldn't believe this. What nice full ample tits. I kept wondering if she saw me watching her. Was she putting on a show for me? My pool equipment shed has a partial view of her pool deck and pool. The boards have enough separation between where I can see her. I snuck inside the shed and watched her from there. The space between the boards is maybe 3/8 inch. I don't know if she can see me. She finished her call and got back on the lounge topless. By this time I was stroking my cock and was more aroused as a 71 year old than I had been in 30 years. I watched and stroked. She was facing in my direction the whole time. I don't know if she can see me. I emptied my cum on the pine boards. After a few minutes I slithered back to my pool and got back in. She continued to float and every 15 to 20 minutes she got out to refresh her drink, all the while I watched this topless babe.  Every Friday afternoon she used her pool. Every Friday she was topless either in a one piece or bikini. Every Friday I jacked off in the shed while watching her. I wonder if she was doing this for me or if she didn't really care. I can't wait for warm weather in April and May to see if it will happen again?  I masturbate a few times per week but must say her live body makes it much more fun and she makes me rock hard. My mind stays full of the image of her tits as I jack off in the winter waiting for Spring.