Okay so how many people get a thrill out of the thought of sex in public or where they may be seen even caught, I know I do. This is about the first time I did. Up here in Washington the Thunder boat races are a big thing, Unlimited Hydroplane racing. Way back in the day I was like 19, so it was around 1981 and we have literally 120,000 people come in to town for the races. I had met this girl that was traveling through and she knew a friend of mine, well we went out to eat and I was camping at the park where the races are held and she stayed with me. The boats have time trials to see the starting positions of the boats and which heat they will run in. All the people on the shore wade out in the water as the boats go past drinking beer and having a good time. During one of the heats the girl and I were standing in the river mid chest level. We were kissing and she had her arms around my shoulders and her legs wrapped around my waist I was supporting her by holding her up by her ass. well I slid my hand into her bikini bottom and was holding her bare ass in my hand and she kind of moaned in my ear, so I slid the other hand in as well. My fingertips were at the crack of her ass and she moans a little more. Now there is maybe a good hundred people on the shore and in the river where we are or with in 30 feet from us. Even though the Columbia is fresh water it is far from clear, in fact it is a green in color and you cannot see 2 feet down. I was running my fingers up and down the crack of her ass listening to her mumbling in my mouth and shoving her tongue in more aggressively. I let my fingers run up and touch pussy lips, I could feel her bush and I was getting quite hard. Why she said it I don't know but she told me to take off her bottoms so I set her down and grabbed the waistband and pulled them off as she pulled down my trunks. When we looked down we could not tell anything was different. We had barely broke our kiss, she wrapped her legs around me again and I slid in as she impaled herself on me. I held her ass and we were fucking in the wakes of the hydro's as they went by. I'd like to say it was a long screw but was only about the 5 minutes it takes for the qualifying run. It was hard for us both to not be loud but then again listening to the Griffin engines in 6 boats is really noisy. When we were done I held her bottoms and she moved off me and back into them. It seemed like nobody noticed and we did the same thing a few hours later. It was an intense day.