Maddening for sure... If so many pinkys didn't leave a bad taste in peoples mouths over the years, This would not be a issue......I guess if we all had a crystal ball.... buying/selling would be easy.......I Think they call the crystal ball TA....
I haven't sold anything either, for exactly the same reasons. I just know my luck, so I resist the temptation to trade for quick gains by reminding myself of the 30% tax loss.