A prong collar worked wonders on Kali, I tried a Halti too and she also would have ripped her face off as she started scratching at her mouth.
Doesn't look so nice, but I think you need something like it for big rambunctious Labs
Kali - 78lb 10yr old Yellow Lab
Tika - 7yr old Tuxedo DSH
Squeaks - 2yr old Calico DSH