we've done it in the past, when we had warm weather ;D ;D
didn't water them enough and the crop suffered,
We put 2 tyres up, 3 seed pots, covered, when they came through, added another tyre, covered them up and carried on until we had 6 tyres..we only used earlies, when we wanted them, we toppled them onto the nearest bed and dug the spuds out ;D