Rocket Boo Boo .... Advice needed please

Hi,
For some reason I thought A Rocket seed would grow into 1 Rocket leaf 
I therefore sowed a whole packet in a relatively small space. Now realising my mistake I have miles of Rocket plants all tightly squeezed in together. What I would like to know is whether I can take a few plants and transplant them, or is this not possible with Rocket? If not I will start again, but seems a shame when they have come on so well. Thanks

and at this time of year it tend to run to seed very quickly so be prepared to pinch the flowering shoots off.
Just leave one flower stem on if you want it to self seed in that place.........you'll never have to buy seed again