In reply to Jones the teeth:
on reflection you need to be careful about clamping anything round the axe handle due to the carbon fibre outer may be damaged.
I assume the cobras have the same alloy insert in the handle as per the vipers?
I have the vipers and have considered using the 2 Allen key bolts for the strike to secure a trigger. This arrangement also has to keep the strike secure but nothing but ideas at present.
Or you could fashion one using the mouldable epoxy stuff.
Davey