Here is what I built 6 or 7 years ago. [video]http://s745.photobucket.com/user/Hutchnsonarchery/media/100_0994_zpsd676643b.mp4.html[/video] [video]http://s745.photobucket.com/user/Hutchnsonarchery/media/100_0995_zps5d146ed1.mp4.html[/video]