http://www.soundoffrec.com/products/cruise.aspxThese things are awesome. There are several types on the market these days, but I've always been pleased with the good old original "Vista Cruise". You can almost always stretch & exercise your left hand, but not the right hand & keep going. These throttle locks are inexpensive & usually do not require you to remove the grip to install. They are truly a five minute or less job & some of the best dollars you could spend on your bike. Try one... You'll like it.
J.