Most LARP rules around my area (Russia) limit bow strength by its draw weight, using a spring scale to measure the draw weight when the bow is fully drawn with the arrows that are to be used in LARP. Changing arrows during the game is not legal and arrows tested are specially marked.
However, it is often desired to have a stronger bow than the others have. So, what methods can one use to cheat the system and increase the energy output, while still keeping the bow within the draw weight limits?
If something gets possible, how can those methods be prevented?
I know that this question may sound weird for this place, but questions about LARP are legal here, and this question is clearly related to LARP.
Responding to the comments, my goal is to fire faster, more accurately, and more distinctively for the victim (so that it's more clear that the arrow has hit), while still staying within the safety norms.
I am aware that I can choose arrows of different weight and have heavier arrows hit slower, but over longer distances, and vice versa for shorter distances. That is usually not an option.