Chopsy,
I was in LGB as CCO......exited about breakeven after a week or so.......didn't like what I found out.
Briefly in CSH too but that was early 2005........small loss/gain can't remember.......exited on learning that the Russians gave up there and figured the oil had simply seeped back into the reservoirs over the years making the initial results look good.
Niether really made a difference........I made a few other mistakes and traded far too frequently.
Some I exited too early went on to perform very well.......DGO, ELA, PNT, PRTY, BGF, GFM, a few more but you get the picture.
Learning from my mistakes........expensive but hopefully not too late!