I
HATE
that mission so much. Awhile ago, I posted a thread on how much trouble I had with it. Like you, I just got lucky, although it helps to get your motorcycle skill up and keep on the edge of the raised pathways when you get out into the countryside.
Other missions that were a problem was the "Jizzy" mission. The first two portions of it weren't that bad, but the third part where you had to chase the guy in the limo was awful. The broadway that you have to use seems to be damage-proof for the duration of the mission, but it's so slow that you can't catch up to the limo if it gets a lead. Even if oyu do catch up, you can't stay there long enough to do a drive-by and still drive. (Plus, there's no one around to recruit to help you out) I eventually used the smash-and-boom cheat to beat that mission.
I'm currently stuck on the second jizzy mission where you have to catch the 4 guys on motorcycles. These guys travel separately and you only have 5 minutes to do it in, which is ridiculous.
The whole GTA: Sa PC port feels unrefined and untested, like the gameplay hasn't been tweaked well enough-- I sometimes feel like I'm playing beta software.