good point, especially in standard skiing gear (coat loose pants ect), by the time you hit that speed its well past cruising and into the tuck.
You can get up to speed on even a smaller mountain pretty quick. I know two seasons ago at Elk (1000 ft Vert) I got going very fast on 169 cm Elan Mag 4 skis. Granted the conditions made it very easy to get speed-had been icy but then got to 45 which made everything very slick. I got going fast enough by the end of Chippewa that I was airborne for a bit and didn't realize it until I landed. I knew something was odd because the tips quit slapping for a split second and then I absorbed an impact. I was tucking it and trying to get speed, but I actually managed to get more speed than I thought I could and that was only over about 800 vertical feet on a relatively flat hill.