Good advice Terry on the throttle rocker - turn it around or remove it when not needed for those long highway rides.
While probably a nice aid - I find the things a dangerous nuisance for sports riding - especially on high output motorbikes.
I have a ThrottleMeister for my VFR800 (never installed) and some various throttle locks or friction devices that I acquired through the years. For most of my riding though - I want the throttle to snap back when I release and certainly do not want my wrist placement to define it's setting (ever try to recover from an unintentional wheelie with a throttle rocker affixed? - whew!!!!).
Some VFR owners I know have purchased large o-rings that they "roll" between the throttle grip and the switch housing to give similar results that the more expensive friction-type throttle aids offer. The o-rings cost less than a soda.
And there are electrically modulated cruise control devices available for some motorbikes (including the VFR) - but they are a bit pricey. One manufacturer I have heard folks discuss can be seen here:
http://www.mccruise.com
All the best,
John
San Jose, California