Do it outside for gods sake!! If you have a wife, she'll kill you if you do it indoors, and I don't think your mum would be too chuffed with the smell Leon!!
I only boiled mine for three or four hours, and then again the same after I pounded hell out of it. When it dried it wasn't much good, and it has been sat in my cellar for ages. I went down last week and found it again, I gave it a try and it was really soft and caught well in my fire piston.
I'm gonna find some more and give it another try this weekend, maybe put a bit of ash in with the fungus. I'll tell you how I get on!