I have noticed a few guys I train with have a habit of defending chokes with 90% chin/face. While it at times is a viable option it puts me in the predicament of seeing the choke through and having them bitch or just bailing to something else.
whats proper protocol here?
depends on their size, gender, and skill level. but usually follow the "if you dont want to get your face choked, lift your chin" rule
I've always been taught to choke the face and that tucking your chin by itself is not a defense for a choke.
Also you can work techniques to force them to lift their chin but some of those could be seen as mean by some people. Depends on what choke you are working too. 
Well, I do stop and don't face chokes at practice. But I will drive my knuckles on the jaw to open space if I'm against someone of similar or above skill and size. If properly done it is more painful than face choking.
i choked a guys face and his tooth popped through his chin. He agreed he should have tapped and i should not have done it. equal skill and he was bigger
He should've worn a mouth piece
Yea it would have helped. he should have tapped. i think if u pulled realy hard bow arrow style u could fuck someones face up like rip a lip off
In practice with teammates I think causing some discomfort and pain is ok. Dislocating someone's jaw or knowingly dragging the gi across a persons face that can cause marks is a dick move.
IMO, chin is fair game, face is not, but most effective is forcing them to lift the chin or getting under before they defend. Marcelo covers this in detail on his site Mginaction.com use promo code Colin for a free week when signing up.
It seems mean but finishing is just as important as working for it. You have to be a little mean for your teammates. Especially as competitors. Don't get used to leaving the submission because you don't want to be mean about busting there lip or hurting there nose. There are way's to work through this.
If I guy gets his chin under his collar, you did not do the choke correctly...
relax and learn a counter or how to do the choke so he can't get his chin down.
If you pull it tight to try to hurt your training partner, you are going to run out of partners.
Im not a dick to my teammates and I like to learn proper technique (a face choke wouldnt do anything in a self defense situation other than make the other guy uncomfortable as hell and waste energy) so I dont subscribe to the face squeeze. But I do use marcelos method of gripping the forehead and pulling up. Always seems to work for me 
To me, a face choke is like twisting someone's fingers to get the tap. I know people very close to me who differ on that opinion, but I never resort to a face choke. I held a armlock in extension just a little longer than is honorable during that match to make my point - and I didn't feel good about it - but I hope I made my point without complaining or mentioning it that night. The person seems to have slowed himself down with me since then.
If you don't want your face choked than don't put it in front of my choke. That's not real defense.
thebigkahuna - If you don't want your face choked than don't put it in front of my choke. That's not real defense.
And its not a real choke
It is actually...I just have to get through your chin first.
thebigkahuna - It is actually...I just have to get through your chin first.
brixx139 - Im not a dick to my teammates and I like to learn proper technique (a face choke wouldnt do anything in a self defense situation other than make the other guy uncomfortable as hell and waste energy) so I dont subscribe to the face squeeze. But I do use marcelos method of gripping the forehead and pulling up. Always seems to work for me
You can break the guys jaw by choking it. A guy in my gym broke another guys jaw with a choke.
Baroquen Record -brixx139 - Im not a dick to my teammates and I like to learn proper technique (a face choke wouldnt do anything in a self defense situation other than make the other guy uncomfortable as hell and waste energy) so I dont subscribe to the face squeeze. But I do use marcelos method of gripping the forehead and pulling up. Always seems to work for meYou can break the guys jaw by choking it. A guy in my gym broke another guys jaw with a choke.
This is not something that is guaranteed to happen like a choke is guaranteed to make someone lose consciousness. But if you guys enjoy breaking your teammates jaws then have fun with that.
brixx139 -Baroquen Record -brixx139 - Im not a dick to my teammates and I like to learn proper technique (a face choke wouldnt do anything in a self defense situation other than make the other guy uncomfortable as hell and waste energy) so I dont subscribe to the face squeeze. But I do use marcelos method of gripping the forehead and pulling up. Always seems to work for meYou can break the guys jaw by choking it. A guy in my gym broke another guys jaw with a choke.
This is not something that is guaranteed to happen like a choke is guaranteed to make someone lose consciousness. But if you guys enjoy breaking your teammates jaws then have fun with that.