I have trouble with badgers on my allotment plot, and whilst I have managed to keep them off the carrots this year, thanks to a tonne of metalwork, I had a cunning backup plot, so at least we had some carrots for Christmas
I dug out a trench behind the greenhouse at home, a spade wide 6' long and a foot deep, then filled it with the previous year's compost. In this I sowed two rows about 6" apart and them thinned the plants to 3" apart with the rows staggered.
I have the best carrots I've ever grown, the one in the picture has not even been washed!