@Stan Galat, you have me thinking about my engine compartment extinguisher. It is the same one IM has used. It is a stainless steel tube with a little capsule on each end that can melt.
I have seen them mounted up high on the firewall. Now I am thinking that, in that location, maybe the discharge from the extinguisher might be sucked into the fan,
Because my electronic ignition stuff is mounted in that position, I mounted the extinguisher in the rear, under the latch. I have wondered about the effectiveness of it being in that location. Now I am thinking that in this location the fan might pull the discharge through the engine compartment, filling it better.
I also have an Element extinguisher. It could be that some of the Blazecut criticisms could also be leveled against the Element. I would probably try to discharge the Element through the grille instead of opening the engine compartment lid and letting more air into the fire.