that is the question, I just got my P2V and installed the prop guards, my thinking is a "just in case", but I am doing a lot of reading and the consciences seems to be that the prop guards do more harm than good. besides, my unit came with like 4 extra sets of propellers. thoughts? while I am learning to fly (bust out in Pink Floyd song) im sure that's been done before.. anyway, I only went about 30ft, and followed the instruction in the book. im not going to do anything to drastic until I get comfortable.