Generally, on a bike like yours, you should set sag for weight, and tune compression for rider ability. With the shock full open (rebound all the way out, CTD in "D") set sag to 15-20% of the length of the stanchion.
If your bike still blows thru the travel, and you have a high volume air shock, consider this very cheap, highly effective mod (you can do the same thing for free if you have a high volume shock by shimming the high volume can....search MTBR for that). http://www.pinkbike.com/news/tech-tuesd ... -2011.html
This is perfect, I had asked fox if they could tune the shock for me after having to send it in for warranty (ball detent for CTD selector was a PITA to turn and eventually came out) and they said there was nothing they could do to tune it. I think I specifically mentioned revalving it or something since that's how i thought damping would be altered, besides changing oil weights and volumes, like suspension forks. I assume that can be done with mtb forks, I know it can be done with motorcycle forks. Since I'm heavy, 220, it seems like I might be a good candidate for some volume reduction, albeit maybe just a little. Seems like fox has gone out of their way to make their newer air shocks and forks more linear with CTD, according to pink bike. If nothing else, would be worth a try just to see.
I set the sag per fox's instruction the day I got the bike. I'm pretty happy with the sag setting in that I think it's where it should be. My last outing I used probably 80% of the travel and I wasn't being aggressive in regards to hopping off of stuff, was there more for the workout and to get used to the new race tires. The trail is bumpy but there's not much for drops on most of the trail, you have to make the drops bigger by jumping a little and going into them faster.
I have some things to start messing with anyway. I have all of my various settings trials written down since I've had the bike in March and notes next to them, good to go back to if I'm off the bike for a few weeks when I'm getting ready for other types of racing. I know what too much and too little psi is so I have a range to work within anyway.
Thanks guys. Weekend is here and the weather is going to be good.