The hedges around here are mostly quite thin and not often on a high bank.
Pick your ground first of all ,you don't want to be trying to ferret hedgerows that are ten foot thick and on a six foot high bank.
If the hedge is a bit on the thick side don't be frightened to tie back a couple of bushes to make a gap(baler twine)you won't do any damage, they'll spring back into place when you cut the twine.
If you think you've got two warrens and you've got the nets, net them both up and go back to the first to start ferreting, if you need to you can tie in your gaps when you do this .
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