ST,
If the indicator is home brewed and 100% based on price action, I'll have to disagree with you.. Needless to say you must pay the price and do massive research even learn how to code them for the chosen platform.
"Kill them all except your own" that's what a very respected trader once told me. Took me years to follow his advice. Why are we so stubborn ? I suppose that's a whole new discussion.
It's the common crapola that is worthless.
Here is how mine keeps me out of trouble and gives me the best entries even when action gets tricky.
Anek