Ask one of the swimmers for a hand
From Create Your Own Story
You walk to the shore and wave down one of the girls swimming past. She slows and makes her way to the shore. When she arrives she bounces up to you with a smile.
"Whatcha need?"
You smile back and point to your rather obvious boner.
"I could use a little help with this actually."
Her smile becomes a bit more seductive as she slides her hands up her body to her bikini top. She slowly reaches inside and squeezes her breasts... somehow managing to takes two Pokeballs out and takes a step back.
"You'll have to beat me before I can help you with that particular problem."
Her Pokemon are a Goldeen and a Tentacool. Five seconds is all it takes for Bulbasaur to beat them. She recalls her Pokemon and moves a little closer to you.
"So what do you want to do then?"