I rode to Minnesota with a Cramp Buster. While on the trip, I wasn't sure if it helped or not, but after I returned and removed the Cramp Buster, I had to learn to ride all over again it seemed like! Worked great!
That being said, it would be nice to have something to remove your hand to shake it, so I have a vista cruise lock, but have not installed it, and not sure if I will or not. Maybe when I go for another long ride through the states....
2006 Honda 919
States visited on my 919