I was “National Champ” /ahem/ back in 2006.
The best bit was dropping people down the steep singletrack.
Worst bi the flat out fireroad.
That bike was a pair V brakes to aid controol and are far better than a single disc which is hilarious on steep in the mud when the front wheel lets go.
Disk fixed rear hubs though are very expensive altholugh Paul does one now so oneday I’ll get back on one.
It’s ace and stupid in = measures
Stupidest i did was left hand chsinset with flat pedals eithout switching the axles. Yes pedals fell off and 30mph plus downhills were leathal if you lost a foot