I got to thinking about it and was contemplating what I would do if I were in a situation where I could no longer have my dogs on chains.
I use to trap pigs ever now and then. So, this led me to this idea for bulldogs. Get yourself some 5' cattle panel. Wire them end to end, creating a real long single panel. Use as many as you like. The bigger the circle you want, the more panels. After that, get yourself, or build yourself a good quality gate or door for your entrance. Take one of the long panel you just made and wire it to one side of the gate and do the same with the other end of your panel. You now have a circular pen as big or small as you like. Take some T posts and drive them in every 6-10 feet,,,,,,whatever you deem neccessary. If I were to do this, I'd lay it out and mark it. Then, I would dig at least a 1 foot trench to set the panels in to prohibit the dog from diggin out.
This would be way cheaper than a quality 5x10 pen that typically runs $350 and up.
Like I said, I modeled this after pig traps we were using. Pros and cons? Not sure, just come up with it and haven't put a lot of thought into it except for what I used to do for pig pens/traps. It makes a lot of sense to me though and I think it could just be the ticket for some of you folks not getting to use chains. Hell of a lot cheaper than the pens Garner is building also.
Something along the lines of this....but remember, you can make it as large or small as you want and I would make sure it was 5 or 6' high, but I'm the overkill king too, so whatever. http://www.shareyourhunt.com/group/h...nster-hog-trap
Just a thought for some to consider.