OK Wiggles,
We went out yesterday to see how hard it would be to catch young longnose with a cast net, and...it's a little harder than I thought it was going to be. I figured their teeth would get tangled in a monofilament cast net, making them easy to snag, since all they had to do was run into the net and you had them, right? It didn't exactly work that way though, and the gar would slide out the bottom pretty easily. I may try it again with a nylon cast net and see if that works better. I did learn that it's almost impossible to catch them in deep (clear) water, as they'll dive straight down when the net hits the water. If you can corner them in shallow water, it's a lot more effective. We caught a couple, and I kept one (about 18" long). I suspect you aren't going to find any smaller than that this time of year, so you may have to wait until next spring to catch smaller ones in your area. May be cheaper on ya to just buy them, lol.
Cheers,
Don