THE PRIVATE PILOT/HUNTING GUIDE REPORTED THAT HE WAS ANXIOUS TO RELOCATE A HUNTER BEFORE THE CLOSE OF HUNTING SEASON. HE SAID THAT HE WAS ATTEMPTING TO TAKE OFF FROM A REMOTE, 900' GRAVEL STRIP. THE PILOT SAID THAT SHORTLY AFTER BECOMING AIRBORNE, THE WIND SHIFTED FROM A HEADWIND TO A TAILWIND, AND THAT A GUST OF WIND PUSHED THE TAIL DOWN. HE ELECTED TO ABORT THE TAKE OFF, BUT WAS UNABLE TO STOP THE AIRPLANE BEFORE RUNNING OFF THE END OF THE STRIP AND STRIKING A STUMP.