how did you cut out foam?

[alexh]

I've tackled my first small project, an older jones brothers cape fisherman 17 that needed a new floor. I would also like to cut out the foam because when I removed the deck there was standing water on the top of the foam (they didn't completely fill the cavity). So far I have used various saws which cut into it just fine. The issue becomes when I try to remove a section I have cut out. The foam still has a bond to the bottom of the hull and stringers, which I cannot break free without breaking up the foam and making bunch of small pieces. I'm going to try to create a hot wire that would allow me to cut out a majority of the foam out and then just scrape up the rest with a putty knife. Anyone tried this? Please let me know what did/didn't work for you in your projects
Thanks for the help so far!
-alex.