I agree make it round but I wud make it big enuf to work the dogs inside so they kno what to expect when they get one in the woods other wise they won't kno what to do when theys no fence to stop em. Turkeyhunter is just scared to get in the pen w em lol. The dogs really need the exposure to learn to bay they need to kno the pig will hit them. They will gain respect of what they doin r they will catch.