Pot bound

I have been trying to catch up with work in the garden as well as re-arranging it over the last couple of days. Now I have a very nice hosta which has been pot bound for about three years but due to one thing and another I hadn't been able to deal with it until now.
The task was not as easy as I thought it was going to be because when I eventually managed to get it out of the pot I had tremendous difficulty in dividing it. The roots were a solid mass, so taking the fork and spade I tried to get them back to back into the middle of the plant but even with all my weight on them I was unable to penetrate more than an inch. It was almost like trying to get the fork into concrete. After several minutes of extreme effort on my part and the sweat trickling down my face, I gave up and hunted in my shed (outside loo) for something to help divide the wretched plant.
The answer was sitting there against the wall, a pruning saw. Thinking that would do the trick I set to work once again and after some time I had succeeded. I managed to divide the plant into four and potted up two pieces, one for me and one for a neighbour, then I planted the other two pieces in the garden.
Now the unfortunate thing about this hosta is that it makes a very attractive meal for slugs and snails so I think I will be saving egg shells and coffee grounds to put around those in the garden. The piece that I have in the pot has a mulch of broken cockle shells which I saved from the top of the original pot. I just wish I knew where to get some more of these because they are by far and away the best slug repellent that I have ever used as well as being an attractice mulch. Human hair is also supposed to be good too but I haven't got much of that anyway and I don't think it will look as nice as the cockle shells!