I have a friction control that I really like. I got mine from a guy in Sturgis this year who put it on but is easy to do yourself. His web site is
www.blackdogcw.com
His name is Kurt Forget. He lives is Sandpoint, Idaho. Phone: 208-263-0438 Mobile: 208-610-0012
Cost was about $100. Very nice guy. I like it for long trips. I also use a throttle rocker for short trips and around town.