Originally Posted by HagmanMod1 
I agree with green momba if your worried about heat and sliders not lasting put on hyperfax their more money but they are for a reason they last. i run them on both my sleds, on my pro x 440 we were riding trailes at home last year and the other guys had regular sliders with their scratchers down and when we stoped they actually stuck to the track clips and mine hardley got hot. If in deep snow all the time drilling probably does work but like the other guys said you may get dirt in the holes and then the life would be cut in half or weaken them to the point of breakage. pretty bad way to ruin a ride if you ask me. just my thoughts!
Good comments by all. I wanted to add that if you are running in very little snow conditions, drilling them out to make them last is contradictory to what is needed - why would you remove material to make them last longer? If you are running in deep snow all the time, I see the theory behind it (ice build up and less friction on the sliders) for that one, a guy would just have to try it.
For me, I don't run expensive sliders like hyperfax, I just use my scratchers. If the snow conditions are hard or thin enough to burn my sliders, there isn't enough snow to cool the motor either IMO. I only run one set of idlers at the rail curve and the two rear wheels (4 total). I haven't burnt a set of sliders in two seasons, probably can get 2 more out of them.
You can try going REALLLLLLLY fast to cool your motor, but you're still probably going to melt the sliders (unless you go fast enough to keep the track off the ground
But you have to be going fast enough to clear the biggest cross ditch or bump, otherwise you get to taste your kidneys - so of you will know what I'm talking about
)