I did it last year on a 34lb Santa Cruz V10 was god fun on the downs but the long ups where not so fun. Sky line was awful on it but blade and the end decent good fun
This year (next week) I am still FS on a 19.6lb Single Speed Jet 9 carbon which is going to be faster and more fun on the ups and probably as fun on the downs.
What I wasn’t really ready for is that a lot of the seemingly down hill trails have random ups and a series of linked downhills, the heavy DH bike was a struggle on the ups sp i realy killed the flow.
One of my mates was on his Single Speed Hardtail and was one of the fastest, was a several other hard tails and a few full sus bikes all had a brilliant time and all coped fine.