for those of you considering prop guards for the Typhoon Q500 read this 1st. after testing the guards, there are a couple of problems, first off they are ugly. They dont give much protection from the right and left sides of the craft but cover the front and rear just fine, they snap in and from what i hear, if not seated properly they can come off, break a prop and cause a crash ( i did not have that issue). There were 2 issues that were deal breakers however, the worst of which is the fact that guards are almost always in the shot and since i am always recording when the Q is in the air, this just isnt going to work for me. There was 1 issue that bothered me even more, while the guards weigh only about 5 ounces, they do affect the handling especially during an aggressive descent. in the video i launched and flew out to edge of my property, turned around and came back. about halfway back i started an aggressive descent, as i slow forward motion all of a sudden the Q dropped straight down about 6 feet as if there was a hole in the air. I am used to prop wash while descending but this was quite different, i assume the guards surface area have somehow amplified the prop wash effect. but i am no aerodynamics expert. any thoughts on this? I tested it several times whit guards on and off, and the guards definitely have an effect . i was very lucky. from my view point the craft dropped behind the trees i immediately, tried to climb up then the Q popped back up and i flew back and landed....whew, that would have been my first crash. anyway here is a video, i would love to hear your thoughts.