Spiky Hedging or Barrier, to Prevent Hare Coursing

Does anybody know what would be the quickest to establish plant around the perimeter of a 3 acre field bordered by shallow drainage dykes? There are a few hawthorn trees already present on the land and some brambles plus wild rose. The land is virtually pure clay, having been farmed previously with only wheat grown. Essentially looking for the fastest to establish plant to act as a barrier, perhaps that's bramble seeds or something easier to maintain.

I thought hare coursing was illegal in the UK ?
If you mean poaching then a wall of policemen works best
Joking aside have you talked to the police about this ?
A deep moat may work as well as a hedge

David

Yeah its illegal in England, looking on the Internet there seems to be an open season in Scotland. I have spoken to the police, but takes 10 minutes to get through and another 20 mins to send a car. Mostly the hare coursing is on a local farmers land. Could get some cardboard cut out policemen, though they might be suspicious, police being pretty rare in Lincolnshire. A moat might work well, though I'm only using the land as a hobby really. Thought if I got some seeds cheaply could scatter them as a future barrier, maybe could cut down some hawthorn trees use them as a dead-hedge barrier.  

Brambles, dog rose, hawthorn and sloe - all will form a fairly impenetrable hedge if looked after and planted close. Chuck in some holly as well. All will sucker or self propagate. they dowell in our climate and appear to grow on any soil. May be erect a barbed wire fence as well.
If people are determined, they'll break through any barrier though.

I have so many sloes that I do cut them down as use them as a barrier, also willows that can be woven into a living fence.

I had to look up Hare Coursing to see what you all were talking about.
So even thought it is illegal you still have folks  / dogs, coming on to your land ,going after rabbits?

Hares are protected from hunting with dogs rabbits not but anyway you need permission from the owner to hunt even though many  farmers if approached in the right way are more than happy for you to take some rabbits .