Bulldog, I don't have any secrets for finding the queen and to be honest sometimes I don't or don't need to.
If there's any kind of tip I could give for finding queens it would be to look at the big picture.
Instead of looking just for her look at how the bees are acting, you know by now they will face her in most situations, look for circles or semi circles of bees and you just may find her right in the middle of them.
Also do a quick glance at a mass of bees, run your eyes all around, back and forth instead of trying to just see her.
A lot of times she'll pop out at you, kind of like trying to find Waldo.
Don't know if this helps at all, but I hope it does.