Welcome Rail Nut! Come right in and make yourself at home!
It sounds like you have caught the buggy fever a long time ago
Leave them ol' airboats alone and get you a nice railbuggy to play around in again....
I think you will find that the people on here all know a lot about railbuggies and are a pretty friendly bunch of folks. Be sure and look around so you can see if there is going to be a Woodsbuggy.com ride anywhere within driving distance for you so that you can get out there and meet some of your fellow woodsbuggiers.
If you are going to build you a new buggy, be sure and post the pix in the "Builds" section of the Forum so that everybody can see your progress. If you get stuck and find that you need a little bit of help, whether it is with questions about the actual work, or new ideas on how to make something work, be sure to let everybody know and I am sure you will get the help you need.
Again, welcome to Woodsbuggy.com! I hope you enjoy the site and the people on here!