Josh,
I have mailed entries to the last several shows. Like Randy mentioned, you need to watch the deadline dates, it's usually a week or two before the shows. It can get pretty expensive to mail things depending on what service you use. A couple years ago, I took some pictures to the UPS store figuring they could pack them up and mail them for me. Since it was considered art work, they packed them in a box, wrapped that box in bubble wrap, then put them in another box. They were pretty worried about them getting wrecked, or that the jar of pickles grandma was mailing to someone might break and leak on my package. By the time they were done packing, it was an oversize package and with insurance ended up costing $80 to mail, each way!! The next time I mailed something, I just packed it myself and mailed it through the post office. When the package got there, they called and said 3 of the corners of the picture frame had been chipped off. That time I had taken a chance and not put insurance on the package. When they mailed it back, they re-packed it in a different box, but it still looked like it had been dropped in the street and run over. There was a big hole in one side of the box.
There aren't any local guilds around here either. I am a member of Columbine Leather Guild in Colorado. It's about 600 miles away. I know other people close to here that are members of Lonestar. I think most of the guilds would be happy to sign you up and they don't cost much for dues.
The last few years there has been another show in the spring that basically follows IFOLG rules, but you dont have to be a member of a guild to enter. I am not sure if there is a show coming up this spring. Anybody know??