Well I know just a bit. Never really competed in them because I was shooting IPSC and Steel Challenge events but Cal Eilrich is a very famous person and won more than anyone in that arena. Check out his vids. >>>>
Hit 'Em Fast & The Art of Fast Draw - Instructional Videos you will learn much from him.
I met this man twice in my life, both were short just a few hours but the time and stories told by him were really great.
Arvo Ojala
Arvo is considered to be the one who really 'invented' the art of 'Fast draw' as well as patenting the first 'fast draw holster'. Almost every person you ever saw fast drawing a pistol in cowboy movies or shows learned from Arvo.
Some more on him:
Fast Draw Resource Center - Fast Draw Guns
http://www.ingaojala.net/files/catalog_test.pdf
The world of Fast Draw and the collecting that goes with it is phenomenal.
Some high quality hand boned SA holsters can cost thousands!
The guns forget about it....
Another fast draw expert is Bob Munden. A more modern shooter but still holds the record for fastest draw with accurate shots.
Bob Munden
There are shorter vids on him but this is a good watch..
Good luck with it. It can be very addicting and get expensive quick.
And oh yeah we need pics of your new Vaquero

Stainless or Blued?
5 1/2 inch or 7 inch?
.45 long colt or .357?
Decisions decisions decisions ?
And don't rule out Beretta or other makers as there are some great single actions out there.