Fragging Frogspawn?? how aggressive can you frag?

[Chaloupa]

We fragged our massive frogspawn today into 4 pieces.....on each "frag" there are 6-10 heads still....how aggressively can you cut each head? I am curious if you can cut into the white area that feels a bit slimy or just leave it alone and be happy that I (we) didn't kill it! I just see frags others have done with a lone single head or 2 heads and wonder if we could make more smaller frags than we did? Any help or input is appreciated!