OTOH, it can be easy to access in hindsight. If he had used the .50 SL and taken the loss, and it bounced at $34.75 back to the original entry or beyond, then that could be considered short of capital preservation. Basically what I'm thinking (and how I trade things) is it's OK to do so, but there needs to be a hard stop after the second (or third) positions (solid one if the full amount is used like you're suggesting). In fact, I usually prefer going in halves for possible double ups, thirds for possible triple ups, for that possibility, especially in a stock that I may not be very familiar with. But that's just conservative me.
I do understand your caution though, and its not something to take lightly....
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