How to Ride Downhill on a regular skateboard?

OK, first of all and most importantly, how do you handle speed wobbles??? going down hill is fun, feels great, and friggin dangerous WHENNN you get speed wobbles. So, how do you skate downhill all smooth and straight-like? 2nd and final, What brand of trucks are good for going downhill? and what do you do with the trucks AND!!! wheels to be able to be downhill worthy? (ex. (i know these might not be good downhill trucks, but it's just an example.) Thunder trucks, you know, the brands good for skating downhills.) THANKS Everyone!!! P.S. if you know any wheels GRRRRREAT for handling great speeds, that kind of info would be useful too!!! THANKS AGAIN!!!