Just a hint mate.If you fill the cavity with salt(Be sure to pack it tightly) and leave it for 2-3 weeks then simply tap the salt out you get a better result plus you dont get the discolouration you get with meths and it won't stink of meths for the next two years.
Also if you cut the base of charlies tale as you say you don't need to split any sticks simply grab hold tight with both hands put your foot into the flanks of charlie and pull as hard as you can,A little twist to get it started and "pop" of it comes.
Please dont think I'm dissing your methods mate because im honestly not, just tr