This may sound odd, but at times mine will run cooler (sometimes as much as 10F or more) on the trail if I'm sitting down as opposed to standing. I believe the reason for this is when I have my azz back on the seat the rear skid compresses slightly more, which effectively lowers the snow flap so that it catches more roost/scratcher spray for cooling.
I'm not a big guy at 170lbs without gear, but if the temp light starts to flash and terrain conditions allow for sitting, I have used this trick in the past with some success. Also my sled is an ES model with the longer seat which allows for more weight shifting.
If you know that your going to be doing a lot of trail riding, you could also strap your backpack on the tunnel to shift some weight rearward also.
I have also taken a few psi out of the rear shock for the same effect, however that being said it's much easier/faster just to shift my weight around on the sled.