Qurbaani & Halaal Slaughter

Meat slaughtered in non Hanafi countries

Q: Is it permissible for us to eat meat slaughtered in non Hanafi countries, such as Malaysia or Saudi Arabia? The reason I'm asking is that we can't be 100% that the meat is halaal according to Hanafi standards. For example, in Malaysia (Shafie) there is a possibility that it would have been slaughtered intentionally without the tasmiyah being pronounced, as this is valid in the Shafie madhab. Also, there is a difference of opinion on how many veins that needs to be cut in the different schools - not all require three veins to be cut like the Hanafis do. Since the asl of meat is hurmah, do these doubts make it impermissible to eat the meat in non-Hanafi countries? If yes, would the ruling be different if a person permanently moves to one of these countries, since it would be difficult to permanently live as a vegetarian there.

Stunning of animals

Q: Almost all Halaal Certifying Bodies appear to condone the stunning of animals and even chickens prior to slaughtering. But what is the Shariah aspect in this respect? Is it simply deemed an undesirable practice but not explicitly permitted or condoned?

Few people slaughtering one sheep for Rasululullah (Sallallahu Alayhi Wasallam)

Q: A group of students get together to get a sheep slaughtered for Qurbaani for the Prophet (Sallallahu Alayhi Wasallam). Will the Qurbaani be invalid since a group of people cannot slaughter a single sheep, or will it be valid since if they intended the slaughter to be on behalf of a single person (i.e. the Prophet (Sallallahu Alayhi Wasallam)?