Rather than do that, I personally went with a Pitlock set on one bike which protects the wheels, seatpost, brake bolts, and Ahead-set bolt for the fork, and a Pinhead set on another bike.

Its getting pretty common for people to jack forks these days, especially suspension forks. Other than locking skewers, there is no way to lock a fork down, as one can pop the quick release from the front wheel, unscrew the Allen head bolt on top, and be on their way. I've been in bike shops and have overheard people shopping for replacement forks because even though the wheels and bike were secured, someone yanked the fork.

Personally, I think bike makers, similar to keys to a car, should offer Pitlocks as part of the factory standard.