I am working my way through the cave training. I noticed that my primary light is prone to being banged around before getting in the water. Is anyone using a protection cap (maybe out of neoprene?) to protect the glass? I never thought about it for any of my other lights but the cost here is 3-10x in addition to the risk of light failure when deep into a cave. Curious to hear if this is a non-issue or others have found solutions to it