Most Helpful Guy
Going to the beach with your swim team isn't the best move if you want to meet a guy. It's like going with a pack of jackals as far as we're concerned. Sometimes it's hard to get the balls to approach a girl, stick your neck out, and express interest. You being alone makes it infinitely easier. Who wants to be rejected in front of an audience?
Everything else is really bullsh*t. Small bikini will make you look sexy... but maybe more intimidating. Just wear a swimsuit. Any kind. Interacting with the boy you want is good. Making the first move an initiating contact, even better. Say hello. All you have to do is break the ice and your chances of getting asked out drastically increase.
Just be accessible. Be there. It's that simple. Anything that undermines that is f***ing it up.