This is why I like really cheap paper plates, and they're rigid enough to not flap in a breeze.
I only use paper plates and stick-on splatter type decals. Still most times find it hard to accurately see groupings with a good scope or good binoculars. Then again my eyes aren't what they used to be. I have a couple very stable tripods I use and depending on lighting conditions I still find seeing accurately a challenge. Soon I will be investing in a good spotting scope. Still researching. Thanks for everyone's input.