I've always found it easier to just take the first loss and go with the flow of the market myself. I will occasionally "pull" or, rather "pause" a stop loss to make sure T&S is, in a sense, confirming the adverse move. But I will stop out rather than average a loser, everytime. Too much to make by just going with the flow, which means there is too much to lose by fighting it. I guess it works for some. But it would cause me no end of stress until I pulled the plug on the trade one way or the other.
Yeah for most people that works. Occasionally, I have come across a few people who seem to average well and do it consistently. But that territory is littered with corpses (even the good ones get nailed if they get careless just once).