Just some brief comments on your last post ....
it needs reiterating that the event Mr Voight took part in wasn't a Field Trial or anything like one, so the judges interpretation may or may not have represented their operations in a Trial. I'm not qualified to say just how judges in UK Trials give weight to handling or not, but you should bear in mind that the concept of a bird being a mark or not doesn't apply. If a bird comes to ground and the dog marks it, it's a mark and if it comes to ground without the dog seeing it it's a blind. In a US Trial the two are clearly distinguished, but in a UK Trial it's just a bird on the ground and you deal with it as you may.
One other thing crosses my mind; no ground game in US Trials. You'd need to train for it and also for steadiness to a running hare or rabbit. I've seen a GSP Trial that looked like a good night at a greyhound stadium, very amusing for everyone except the handlers.
Your point about a bird hitting the ground and running is well made. On a "real" shoot as opposed to a Trial, If I see a bird hit in the air that's flying on towards cover I'll often send the dog straight away, but I've never seen that happen at a Trial.
The "cultural" thing is often misinterpreted. Driven shooting is still not for the impecunious, but the associated dog work is open to Everyman. Trialling does have it's costs of course, but one of the most successful and well regarded Triallers in recent years is a lady living in a city area council house. Many folk use the cash from their picking up days (beaters and pickers get paid) to defray expenses generally and make a contribution to other doggy activities, which might be Trialling, Working Tests or scurries. The latter are probably worth an explanation in themselves.
Yes, American mores and perceptions are different to those over here; this is often summed up in the phrase "They're absolutely bloody barking mad you know". It's almost a definition of another culture to say "Well I don't understand it, but it's wrong anyway, we'd never do it like that".
Nose. Well it's of prime importance to me, and I selected Lab Jack as a puppy because his blood line was renowned for good schnozzles and he hasn't disappointed; to put it in "our" terms, he's as good as the best Springer I ever had! His sire was the winning Welsh dog at Sherborne which may or may not be a coincidence. It seems from what folk say, that US Trials don't put a dog's nose to the test in the same way that the Brit version does, wether that represents a potential problem for the breed I'm unqualified to say, that's for you guys.