I have seen an aerial target thrower that attatches to a truck hitch, on Byron Ferguson's videaos and advertised in TBM but I can't find a website to look at them. Can anyone help on this? Thanks!  

the ones i've seen are called hitch hiker

http://www.blueridgeoctober.com/hhiker.htm

Thanks, that's the one!  

Don't do it man, don't get one!  You'll spend all your time throwing disks in the air and trying to hit them. Its as addictive as anything you'll ever do!