Having lived in Alaska, I can tell you that it might not be logistically or financially possible for a musher in Alaska to have their dogs OFA'd. I worked as a vet tech while we lived in Alaska, and dealt with many dog teams. So I wouldn't bank on your friend's method being a perfect one, it may simply be out of necessity.
Most vet practices are in the larger towns, they are not evenly scattered along the road system (assuming you are aware that there is not a spiderweb network of roads across Alaska - look at a map to see how few there actually are - MUCH different than anywhere in the lower 48). Many mushers do not even live on the road system, anyway. Many are considered "off the grid". In order to get an OFA, they would have to transport the dog(s) to a vet (possibly hundred of miles, possibly by air, too), and pay for the exam, radiographs, possible sedation and OFA fee. NOTHING is cheap in Alaska, so you are easily looking at $750 per dog, likely more when you include transportation costs. I was quoted $1000 to have non-OFA basic hip x-rays done at a specialty clinic back in 2008!
I am not sure I would want to breed for a litter of pups that are going to be expected to work hard, without first knowing what their chances are at being able to do so. Especially since the OP says she is breeding for one litter and keeping all the pups. It doesn't sound like she will have multiple litters with the option to discard the ones that are not fit to work. And, yes, the big kennels do cull their litters/packs.