I think I'm going to get stuck on that fucking mission for a month too...
24 August 2008: Woohoo! I passed "High Wire" for the first time, now I can continue the storyline in peace....
LOL, I'm surprised if I'm beating it anytime soon, hardly anyone mentions it but it's 100 times harder than Unfriendly Competition, just snipe the dealer in the end instead going down the beach and attack him, this way the end is soooooooo easy...