no one,
The 'little plastic hammers with the point' to which I think you are referring are specifically designed to deal with 'toughened glass'.
Not laminated glass or even 'perspex'.
I stand to be corrected, but I strongly doubt they'd work with a blown perspex canopy.
What is needed is something more substantial - along the lines of that developed for the RAAF Sabres, as mentioned above.
Going back a bit further, the jemmy-like tool that you see clipped to the inside of a Spitfire door was also designed for that purpose.
p.s. LeadSled, the S&W spring-loaded tool you mention was also designed to attack 'toughened glass' at its 'achilles heel',
i.e., its relative rigidity and inherent tension.
I'd be interested to hear if they do actually work effectively with Perspex. Once again, I have my doubts, though.
.
Last edited by Stanwell; 21st Feb 2016 at 05:43.