Yeah... Sorry B.E. Numbered cones have been around for a long time...

... You know if Bern had put in walls you'd complain that they would be a breakage hazard to your r/c's...

And as for barbed wire... Dude that couldnt of sounded like a good idea to even youu bro! LOL!!! I dont think any insurance company or property owner in his/her right mind would want the possiblity of someone snagging an ankle on a piece of half burried, rusted barbed wire!