I had spider drop inside my sun glasses while flying a demo. At that point I was glad to have a qualified spotter who nearly killed me trying to get my glasses off

Now as part of my pre flight I always check inside of my glases for stuff

As for jet pilots being good spotters I agree. One time was doing my low high speed pass with my BVM SuperBandit when my spotter yelled there is a plane on final. Thankk god for a god set of yeys, the full size pilot made no calls.[:@]

Peter