In the Season 2 opener, "Superhoodie",
later shown to be Simon,
throws a paper airplane across the lake with apparently pinpoint precision. At this point, we know he has the following powers:
The ability to travel back in time (one-way trip only), and immunity to all other powers. He may have precognition still, although it is possible that he gave up that power in exchange for the time-traveling power, as stealing it outright might be seen to be out of character for Simon.
We did see him practicing his parkour skills, but I don't remember him training his paper airplane-throwing skills, and I'm not sure any amount of practice would enable that throw.
He seemed pretty confident that it would land where he wanted it to.