That's the holy grail of SCT... doesn't really exist.

You want a body that will last, don't put a bunch of vent holes in it. You want a body that won't parachute, you gotta put a bunch of vent holes in it.

If you try setting the truck up in the air, so the nose flies down, it won't parachute near as bad.

Either coast off all jumps or just barely blip the brake right after you leave the lip. Takes a bit to get it right, and it won't work all the time, but it will help a lot. I drive outdoors 95% of the time, and flying nose down will get me over the big triple when most guys are getting blown backwards.