I usually do that, Morton, but last year I got a bit slack. I plant in blocks, as we have raised beds, so the staggered method works a treat.
Unfortunately I lost a lot of plants to pigeons - I planted them, popped home intending to return and net them, got delayed - and hey, lovely meal for the blasted sky rats.
Yes, I know it's pigeons, that's the only pest we have on these particular allotments, as they are enclosed all round with an excellent fence, chicken wire and a prison wall.