either stop being a baby and learn to do tricks at speed, the way they should be done. or put your skirt on and add more space between drop in and box.
OP said they can't make it any longer, so I assumed that was due to space issues, and judging by the speed they're going at if it's 8 feet they're probably only on the rail for a fraction of a second, not enough time for anything.
you have been blessed with too much speed on your summer setup. complaining about it is like saying, "well i was gonna fuck these two hot milfs but i only want one"
rub KY jelly on your skis and rub creamcheese on the dropin. you may not believe me, but this catalyzes a chemical reaction that will create a more sticky dropin and slow you down just enough to hit the box.