Create virtual copies of the photo, edit each virtual copy however you want. Done! (You can export each virtual copy individually if you need to have them outside of Lightroom)
Thank you, that was spot on. It will help a great deal right now as I am taking multiple crops from shots of the ocean looking for something striking.
I doesn't seem to matter if I take a copy while editing or before I start editing, I can always reset the original and start again.
Is it possible to rename the copy? I had a look around here and in LR Help but rename doesn't come together with virtual copy.
In the metadata on the right, there is a "Copy Name" field, you can name the virtual copy any way you want.