I use a Contour shuttle for this. Tim made the SWS action "move cursor configurable seconds" scrubbable for me -I used a faderport on SONAR, just getting a Faderport to use with my shuttle on REAPER -looking forward to the extended functionality, and with the Faderport covering the transport, I can change the way I use the shuttle's button set.
I use the jog and the shuttle wheels with and without modifiers for a range of navigation functions -jumping markers, bars, stretch markers, scrolling the arrange -only limitation is imagination
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