Years ago in Georgia I painted some wood dowels with high visibility blaze orange. I did it to mark off some yardages for a stand overlooking a peanut field the deer were really whacking. It worked so well I put some the next year on a soybean field stand. However, I painted the dowels in the summer and left them out doors in the rain and everything for months. I went so far as to put 4 rows out in a fan around me out to 60 yards(1 row left and right with the other rows at 45 degree angles. That was in my young and foolish years but it yielded me a nice buck with a 45 yard shot. This was before rangefinders.
YOU KNOW.... you could really have some fun with some paint around this guys stand.[
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All you have to do is decide if you want him to shoot low or high. P.S. Take in a little shovel to cover his existing paint.[>:]