The spring can only compress for what it is designed, so with your theory, you could remove shocks period and have helladrop.
The only way I can see that is if you were running too long of a shock to begin with, but technically you would not be getting more drop, just what you were supposed to in the beginning
The only way I can see that is if you were running too long of a shock to begin with, but technically you would not be getting more drop, just what you were supposed to in the beginning