If you're talking about heliskiing in Thompson Pass or anywhere else around Valdez, be aware that you can get skunked really easily. Weather is nothing if not unpredictable there. Winds, poor visibility, avalanches... if it can go wrong, it usually does. When it's good, it's epic-good. When it's bad, it's miserable or downright life-threatening. Most of the time I go there for the experience, not for the awesome conditions. You spend a lot of time around the base camp waiting for safety to clear the routes or waiting for a ride- be patient. I encountered some boney, severely windblown conditions earlier in the season last year, but a friend caught it just right for some really nice turns a month or so later. All in the timing and luck I guess.
I go through ABA
, since they offer a no-frills/all-business operation. Great guides, well-run, and just a bunch of nice people. If you go, make reservations early, because that puts you at the top of the list for heli rides.