Dividing Huge Lily
I have a 13x15x3 foot pond and a water lily that has gotten too large. It covers about a 4x4 foot area. I've been using a hack saw to cut off the edges (pond is mostly drained). It's a mass of rhizomes (mostly) and roots. I can't get any further with the hack saw. I thought of using a chain saw while in the pond, but I'm concerned about the liner. Not to mention, maneuvering is very tricky with the slick muck.
The best solution would be to pull the lily completely out and use a chain saw, but I can't figure out how to do it. I can't get under it and I think hooks would pull loose. Plus, the mass is extremely heavy.
Does anyone have any ideas of how I can proceed further?