de-interlacing will take away all the horizontal lines you can see on any moving object in the video.
It was OK, If I was doing it I might shorten it a bit, try and edit to the music, put some markers on the beats and try and time the swings to them, I'd lose most of the background audio aswell, just leave in the funny bits,
a good tip with swearing is, bleep it, but put in more bleeps than is necessary, that way you don't offend anyone too badly, and you get more of a laugh out of it than just the swearing.
e.g. "he's Bleeping Bleeped that miles..... Bleeeep"
The titles could be a lot better with no more effort too. A nice PGA style lower third with names would be cool, also rip some sound-effects and commentary from Tiger Woods golf to finish the effect.
Also, I'd add some slow-mo too, and some other naff effects probably.
That's just what comes to mind after 1 watch.
Panasonic SD9, Panasonic NVGS-75, Canon MV600i