Leonard was also at the park, armed with a knife, after driving there intending to find a female with whom he could have sexual intercourse.
Seeing the victim on a track, Leonard walked away from her but lingered close to the track awaiting an opportunity to attack.
After a short wait, he grabbed the victim's shoulders with both hands and pushed her backwards, causing her to land on her back on a grassy area beside the track.
Leonard then lay on top of her.
The victim was struggling and yelling at him to get off.
He did so and fled when he saw her reach for her cell phone.
Although the victim had little in the way of any physical injury, she suffered severe emotional trauma.
When interviewed by police, Leonard said he intended to find a female to rape because he could not get a "missus".