If you are riding on smooth roads, the twist throttle will work okay. However, if you ride in rough terrain, the ATV will pull on the handlebars very hard, and you will have your hands full just hanging on, let alone working a twist throttle.
That thumb throttle extender is the ticket.
__________________
Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894