You can always use a safety pin to secure the toungue in establishing an airway:
A temporary airway can be established by attaching the anterior aspect of the victim’s
tongue to the lower lip with two safety pins. An alternative to puncturing the lower lip is to
pass a string through the safety pins and hold traction on the tongue by securing the other end
to the victim’s shirt button or jacket zipper.
from:
Backcountry 911: 1,001 Uses for Duct Tape and Safety Pins Pete