@ Thanks for the statistics man. I didn’t expect the solution to be this detailed. 
I was thinking of a sphere collision mesh to get better coverage for detecting pawns in elevated/lower positions.
Yea it’s definitely better to use grid arrays for most cases. I’m using the grid arrays for the rest of the LoS functionality so that I can extend it to use for Overwatch. However in this particular scenario, I do not have any need for storing the data regarding the spotted enemy pawns while moving. So I’m going to try out the collision mesh for now.